ADIPONITRILE

It is used as an extractant for aromatic hydrocarbons, in organic synthesis for corrosion inhibitors, rubber accelerators, and adipoguanine, and as a chemical intermediate for hexamethylene diamine in the manufacture of Nylon 66 (Sax & Lewis, 1987; HSDB , 1990; EPA, 1985; Hartung, 1982).

FORMS

Adiponitrile is a water-white to yellowish colored, nearly odorless combustible liquid which floats on water (Sax & Lewis, 1989; Sax & Lewis, 1987; CHRIS , 1990; EPA, 1985; OHM/TADS , 1990).
Its low vapor pressure makes it unlikely that exposure to harmful concentrations of vapor will occur when the chemical is handled properly with adequate ventilation under ambient conditions (Sax & Lewis, 1989).

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Adiponitrile is a cyanogenic aliphatic nitrile compound. It is irritating to the skin and eyes, and direct dermal contact causes irritation and inflammation. In one case, serious skin destruction on a foot occurred.

The toxicity of adiponitrile is due to metabolic release of cyanide following absorption. A patient who ingested a few milliliters of adiponitrile developed chest tightness, headache, weakness, unsteady gait, vertigo, cyanosis, hypotension, tachycardia, mydriasis, confusion, tonic- clonic muscular contractions, and vomiting, with onset about 20 minutes after ingestion and worsening of the condition about 2 hours later. Treatment with sodium thiosulfate brought about slow recovery.

Rats exposed by inhalation for 10 4-hour periods to adiponitrile concentrations of 0.1 or 0.3 mg/Liter developed salivation, irregular respirations, increased blood glucose, BUN, and creatinine levels, and decreased erythrocyte and leukocyte counts and hemoglobin. These effects had normalized by 14 days following the last exposure, and have not been reported in exposed humans.

In poisoning with most nitrile compounds, the onset of symptoms is generally delayed for up to several hours after exposure, thus making a PROLONGED PERIOD OF OBSERVATION in a CONTROLLED SETTING NECESSARY.

The remainder of this discussion relates to CYANIDE POISONING and TREATMENT. The possibility of DELAYED ONSET of SYMPTOMS, up to SEVERAL HOURS AFTER ADIPONITRILE EXPOSURE must be kept in mind. PROLONGED OBSERVATION is usually required for initially asymptomatic individuals with aliphatic nitrile exposure.

Lesser cyanide exposures may produce nausea, vomiting, palpitations, confusion, hyperventilation, anxiety, and vertigo. Severe hypoxic signs in the absence of cyanosis suggest the diagnosis. Patients have survived potentially lethal cyanide exposures with supportive care only, and the absence of a rapidly deteriorating course does not exclude the diagnosis.

Cyanosis is generally a late finding and does not occur until the stage of circulatory collapse and apnea. Initially the patient may experience flushing, tachycardia, tachypnea, headache, and dizziness. This may progress to agitation, stupor, coma, apnea, generalized convulsions, pulmonary edema, bradycardia, hypotension, and death.

Severe hypoxic signs in the absence of cyanosis should suggest the diagnosis of cyanide poisoning.

If systemic CYANIDE POISONING is suspected, IMMEDIATELY BEGIN ADMINISTERING 100% OXYGEN. OBTAIN THE CYANIDE ANTIDOTE KIT AND PREPARE IT FOR USE.

POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death.
Contact with molten substance may cause severe burns to skin and eyes.
Avoid any skin contact.
Effects of contact or inhalation may be delayed.
Fire may produce irritating, corrosive and/or toxic gases.
Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

ACUTE CLINICAL EFFECTS

Adiponitrile is highly toxic by the ingestion, inhalation, and dermal exposure routes (Sax & Lewis, 1987; HSDB , 1990). It is a skin and eye irritant, and can cause inflammation or even destruction of the skin (EPA, 1985; Hartung, 1982; Smith & Kennedy, 1982).

Systemic toxicity of adiponitrile is due to metabolic release of CYANIDE (Sax & Lewis, 1989; Hartung, 1982; Tanii & Hashimoto, 1985; Johannsen & Levinskas, 1986). Cyanide is a potent metabolic poison which interferes with respiration at the cellular level (Hall & Rumack, 1986). No reports of fatalities from acute adiponitrile exposure were found in the literature at the time of this review.

Ingestion of only a few milliliters of adiponitrile resulted in chest tightness, headache, weakness, unsteady gait, vertigo, cyanosis, hypotension, tachycardia, mydriasis, confusion, tonic-clonic muscular contractions, and vomiting about 20 minutes postingestion. These conditions worsened about 2 hours later (Hartung, 1982; Smith & Kennedy, 1982).

Other effects reported in early acute CYANIDE poisoning (not necessarily attributed to adiponitrile) include bradycardia, hypertension, flushing, tachycardia, tachypnea, headache, and dizziness (Vogel et al, 1981; Hall & Rumack, 1986).

Symptoms of severe or late stages of cyanide poisoning include agitation, stupor, coma, apnea, generalized convulsions, pulmonary edema, bradycardia, hypotension, cardiac conduction defects and arrhythmias, generalized seizures, metabolic acidosis, mydriasis, and death (Stewart, 1974; Vogel et al, 1981; Graham et al, 1977; Hall & Rumack, 1986).

Lesser cyanide exposures may produce nausea, vomiting, palpitations, confusion, hyperventilation, anxiety, and vertigo (Hall & Rumack, 1986). Many of these same symptoms can be caused by exposure to SIMPLE ASPHYXIANTS, central nervous system depressants, or other substances which cause hypoxia.

In poisoning with most nitrile compounds, the onset of symptoms is often delayed for up to several hours after exposure (Hartung, 1982). Therefore, it is necessary to have a PROLONGED PERIOD OF OBSERVATION in a CONTROLLED SETTING for patients with significant acute adiponitrile exposure.

Delayed effects of acute cyanide poisoning may resemble Parkinson's disease (Uitti et al, 1985). Slowed gait, masked facies, hypophonia, mild rigidity, and tremor may develop over a period of weeks following severe acute cyanide poisoning; these effects may be permanent (Rosenberg et al, 1989).

Rare cases of personality changes, memory deficits, and extrapyramidal syndromes have been reported in persons surviving acute cyanide poisoning (Jouglard et al, 1971; Jouglard et al, 1974).

CHRONIC CLINICAL EFFECTS

Chronic occupational exposure to other aliphatic nitrile compounds, such as acetonitrile, has resulted in interference with thyroid iodine uptake and caused goiter, presumably because thiocyanate produced during normal cyanide detoxification by the endogenous rhodanese enzyme competes with iodine for thyroid uptake (Hartung, 1982).

Rats exposed by the inhalation route to adiponitrile concentrations of 0.1 or 0.3 mg/L for 10 4-hour periods developed excessive salivation, irregular respirations, increased blood glucose, BUN, and creatinine levels, decreased erythrocyte and leukocyte counts, and decreased hemoglobin levels (Smith & Kennedy, 1982). These effects normalized by 14 days following the last exposure (Smith & Kennedy, 1982), and have not been reported in occupationally-exposed humans.

-MEDICAL TREATMENT

LIFE SUPPORT

Support respiratory and cardiovascular function.

SUMMARY

FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Move victim to fresh air.
Call 911 or emergency medical service.
Give artificial respiration if victim is not breathing.
Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes.
In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes.
For minor skin contact, avoid spreading material on unaffected skin.
Keep victim warm and quiet.
Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed.
Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.

FIRST AID

CYANIDE POISONING

The treatment of adiponitrile poisoning is essentially that for cyanide intoxication.
Establish respiration; avoid mouth-to-mouth resuscitation if possible during CPR to prevent self-poisoning. Immediately begin therapy with 100% oxygen. Be prepared for endotracheal intubation if necessary.
Rescuers must not enter areas with potential high airborne concentrations of this agent without self-contained breathing apparatus (SCBA) to avoid becoming secondary victims. Avoid direct dermal contact with cyanide contaminated patient or gastric contents.
Administer 100% oxygen: Establish secure large bore IV.
A cyanide antidote, either hydroxocobalamin OR the sodium nitrite/sodium thiosulfate kit, should be administered to patients with symptomatic poisoning.
HYDROXOCOBALAMIN: ADULT DOSE: 5 g (two 2.5 g vials each reconstituted with 100 mL sterile 0.9% saline) administered as an intravenous infusion over 15 minutes. For severe poisoning, a second dose of 5 g may be infused intravenously over 15 minutes to 2 hours, depending on the patient's condition. CHILDREN: Limited experience; a dose of 70 mg/kg has been used in pediatric patients.
Prepare the Cyanide Antidote Kit for use in symptomatic patients:

SODIUM NITRITE: Adult: 10 mL (300 mg) of a 3% solution IV at a rate of 2.5 to 5 mL/minute; Child (with normal hemoglobin concentration): 0.2 mL/kg (6 mg/kg) of a 3% solution IV at a rate of 2.5 to 5 mL/minute, not to exceed 10 mL (300 mg).
Repeat one-half of initial sodium nitrite dose one-half hour later if there is inadequate clinical response. Calculate pediatric doses precisely to avoid potentially life-threatening methemoglobinemia. Use with caution if carbon monoxide poisoning is also suspected. Monitor blood pressure carefully. Reduce nitrite administration rate if hypotension occurs.
SODIUM THIOSULFATE: Administer sodium thiosulfate IV immediately following sodium nitrite. DOSE: ADULT: 50 mL (12.5 g) of a 25% solution; CHILD: 1 mL/kg (250 mg/kg) of a 25% solution, not to exceed 50 mL (12.5 g) total dose. A second dose, one-half of the first dose, may be administered if signs of cyanide toxicity reappear.

SODIUM BICARBONATE: Administer 1 mEq/kg IV to acidotic patients.
SEIZURES: Administer a benzodiazepine; DIAZEPAM (ADULT: 5 to 10 mg IV initially; repeat every 5 to 20 minutes as needed. CHILD: 0.1 to 0.5 mg/kg IV over 2 to 5 minutes; up to a maximum of 10 mg/dose. May repeat dose every 5 to 10 minutes as needed) or LORAZEPAM (ADULT: 2 to 4 mg IV initially; repeat every 5 to 10 minutes as needed, if seizures persist. CHILD: 0.05 to 0.1 mg/kg IV over 2 to 5 minutes, up to a maximum of 4 mg/dose; may repeat in 5 to 15 minutes as needed, if seizures continue).

Consider phenobarbital or propofol if seizures recur after diazepam 30 mg (adults) or 10 mg (children greater than 5 years).
Monitor for hypotension, dysrhythmias, respiratory depression, and need for endotracheal intubation. Evaluate for hypoglycemia, electrolyte disturbances, and hypoxia.

METHEMOGLOBINEMIA

If excessive methemoglobinemia occurs, some authors have suggested that methylene blue should not be used because it could cause release of cyanide from the cyanmethemoglobin complex. Such authors have suggested that emergency exchange transfusion is the treatment of choice. Hyperbaric oxygen therapy could be used to support the patient while preparations for exchange transfusion are being made.
However, methylene or toluidine blue have been used successfully in this setting without worsening the course of the cyanide poisoning. There is some controversy over whether or not the induction of methemoglobinemia is the sodium nitrite mechanism of action in cyanide poisoning. As long as intensive care monitoring and further antidote doses (if required) are available, methylene blue can most likely be safely administered in this setting.
METHEMOGLOBINEMIA: Determine the methemoglobin concentration and evaluate the patient for clinical effects of methemoglobinemia (ie, dyspnea, headache, fatigue, CNS depression, tachycardia, metabolic acidosis). Treat patients with symptomatic methemoglobinemia with methylene blue (this usually occurs at methemoglobin concentrations above 20% to 30%, but may occur at lower methemoglobin concentrations in patients with anemia, or underlying pulmonary or cardiovascular disorders). Administer oxygen while preparing for methylene blue therapy.
METHYLENE BLUE: INITIAL DOSE/ADULT OR CHILD: 1 mg/kg IV over 5 to 30 minutes; a repeat dose of up to 1 mg/kg may be given 1 hour after the first dose if methemoglobin levels remain greater than 30% or if signs and symptoms persist. NOTE: Methylene blue is available as follows: 50 mg/10 mL (5 mg/mL or 0.5% solution) single-dose ampules and 10 mg/1 mL (1% solution) vials. Additional doses may sometimes be required. Improvement is usually noted shortly after administration if diagnosis is correct. Consider other diagnoses or treatment options if no improvement has been observed after several doses. If intravenous access cannot be established, methylene blue may also be given by intraosseous infusion. Methylene blue should not be given by subcutaneous or intrathecal injection. NEONATES: DOSE: 0.3 to 1 mg/kg.
Concomitant use of methylene blue with serotonergic drugs, including serotonin reuptake inhibitors (SRIs), selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), norepinephrine-dopamine reuptake inhibitors (NDRIs), triptans, and ergot alkaloids may increase the risk of potentially fatal serotonin syndrome.

HYPERBARIC OXYGEN AND HEMODIALYSIS: May be useful in severe cases not responsive to supportive and antidotal therapy.
ACUTE LUNG INJURY: Maintain ventilation and oxygenation and evaluate with frequent arterial blood gases and/or pulse oximetry monitoring. Early use of PEEP and mechanical ventilation may be needed.
HYPOTENSION: Infuse 10 to 20 mL/kg isotonic fluid. If hypotension persists, administer dopamine (5 to 20 mcg/kg/min) or norepinephrine (ADULT: begin infusion at 0.5 to 1 mcg/min; CHILD: begin infusion at 0.1 mcg/kg/min); titrate to desired response.
ALTERNATE ANTIDOTES

Dicobalt-EDTA (Kelocyanor(R)) and 4-DMAP (4-dimethylaminophenol) are alternate cyanide antidotes in clinical use in various countries outside the USA.

INHALATION EXPOSURE

INHALATION: Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with an inhaled beta2-adrenergic agonist. Consider systemic corticosteroids in patients with significant bronchospasm.
ACUTE LUNG INJURY: Maintain ventilation and oxygenation and evaluate with frequent arterial blood gases and/or pulse oximetry monitoring. Early use of PEEP and mechanical ventilation may be needed.

DERMAL EXPOSURE

DECONTAMINATION: Remove contaminated clothing and jewelry and place them in plastic bags. Wash exposed areas with soap and water for 10 to 15 minutes with gentle sponging to avoid skin breakdown. A physician may need to examine the area if irritation or pain persists (Burgess et al, 1999).
Some chemicals can produce systemic poisoning by absorption through intact skin. Carefully observe patients with dermal exposure for the development of any systemic signs or symptoms and administer symptomatic treatment as necessary.

EYE EXPOSURE

DECONTAMINATION: Remove contact lenses and irrigate exposed eyes with copious amounts of room temperature 0.9% saline or water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist after 15 minutes of irrigation, the patient should be seen in a healthcare facility.

ORAL/PARENTERAL EXPOSURE

In symptomatic patients, skip these steps until other major emergency measures including use of Cyanide Antidote Kit and other life support measures have been instituted.

Perform gastric lavage with a large bore tube after endotracheal intubation. Do not induce vomiting due to risk of seizures or CNS depression.
GASTRIC LAVAGE: Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Protect airway by placement in the head down left lateral decubitus position or by endotracheal intubation. Control any seizures first.

CONTRAINDICATIONS: Loss of airway protective reflexes or decreased level of consciousness in unintubated patients; following ingestion of corrosives; hydrocarbons (high aspiration potential); patients at risk of hemorrhage or gastrointestinal perforation; and trivial or non-toxic ingestion.

ACTIVATED CHARCOAL: Administer charcoal as a slurry (240 mL water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents, 25 to 50 g in children (1 to 12 years), and 1 g/kg in infants less than 1 year old.

Administer 100% oxygen. Establish secure large bore IV.
A cyanide antidote, either hydroxocobalamin OR the sodium nitrite/sodium thiosulfate kit, should be administered to patients with symptomatic poisoning.
HYDROXOCOBALAMIN: ADULT DOSE: 5 g (two 2.5 g vials each reconstituted with 100 mL sterile 0.9% saline) administered as an intravenous infusion over 15 minutes. For severe poisoning, a second dose of 5 g may be infused intravenously over 15 minutes to 2 hours, depending on the patient's condition. CHILDREN: Limited experience; a dose of 70 mg/kg has been used in pediatric patients.
Prepare the Cyanide Antidote Kit for use in symptomatic patients:

SODIUM NITRITE: Adult: 10 mL (300 mg) of a 3% solution IV at a rate of 2.5 to 5 mL/minute; Child (with normal hemoglobin concentration): 0.2 mL/kg (6 mg/kg) of a 3% solution IV at a rate of 2.5 to 5 mL/minute, not to exceed 10 mL (300 mg).
Repeat one-half of initial sodium nitrite dose one-half hour later if there is inadequate clinical response. Calculate pediatric doses precisely to avoid potentially life-threatening methemoglobinemia. Use with caution if carbon monoxide poisoning is also suspected. Monitor blood pressure carefully. Reduce nitrite administration rate if hypotension occurs.
SODIUM THIOSULFATE: Administer sodium thiosulfate IV immediately following sodium nitrite. DOSE: ADULT: 50 mL (12.5 g) of a 25% solution; CHILD: 1 mL/kg (250 mg/kg) of a 25% solution, not to exceed 50 mL (12.5 g) total dose. A second dose, one-half of the first dose, may be administered if signs of cyanide toxicity reappear.

SODIUM BICARBONATE: Administer 1 mEq/kg IV to acidotic patients.
SEIZURES: Administer a benzodiazepine; DIAZEPAM (ADULT: 5 to 10 mg IV initially; repeat every 5 to 20 minutes as needed. CHILD: 0.1 to 0.5 mg/kg IV over 2 to 5 minutes; up to a maximum of 10 mg/dose. May repeat dose every 5 to 10 minutes as needed) or LORAZEPAM (ADULT: 2 to 4 mg IV initially; repeat every 5 to 10 minutes as needed, if seizures persist. CHILD: 0.05 to 0.1 mg/kg IV over 2 to 5 minutes, up to a maximum of 4 mg/dose; may repeat in 5 to 15 minutes as needed, if seizures continue).

Consider phenobarbital or propofol if seizures recur after diazepam 30 mg (adults) or 10 mg (children greater than 5 years).
Monitor for hypotension, dysrhythmias, respiratory depression, and need for endotracheal intubation. Evaluate for hypoglycemia, electrolyte disturbances, and hypoxia.

ACUTE LUNG INJURY: Maintain ventilation and oxygenation and evaluate with frequent arterial blood gases and/or pulse oximetry monitoring. Early use of PEEP and mechanical ventilation may be needed.
HYPOTENSION: Infuse 10 to 20 mL/kg isotonic fluid. If hypotension persists, administer dopamine (5 to 20 mcg/kg/min) or norepinephrine (ADULT: begin infusion at 0.5 to 1 mcg/min; CHILD: begin infusion at 0.1 mcg/kg/min); titrate to desired response.
HYPERBARIC OXYGEN AND HEMODIALYSIS: May be useful in severe cases not responsive to supportive and antidotal therapy.
If respiratory tract irritation or respiratory depression is evident, monitor arterial blood gases, chest x-ray, and pulmonary function tests.
Whole blood cyanide levels may be obtained to document the poisoning and response to treatment.
METHEMOGLOBINEMIA

If excessive methemoglobinemia occurs, some authors have suggested that methylene blue should not be used because it could cause release of cyanide from the cyanmethemoglobin complex. Such authors have suggested that emergency exchange transfusion is the treatment of choice. Hyperbaric oxygen therapy could be used to support the patient while preparations for exchange transfusion are being made.
However, methylene or toluidine blue have been used successfully in this setting without worsening the course of the cyanide poisoning. There is some controversy over whether or not the induction of methemoglobinemia is the sodium nitrite mechanism of action in cyanide poisoning. As long as intensive care monitoring and further antidote doses (if required) are available, methylene blue can most likely be safely administered in this setting.
METHEMOGLOBINEMIA: Determine the methemoglobin concentration and evaluate the patient for clinical effects of methemoglobinemia (ie, dyspnea, headache, fatigue, CNS depression, tachycardia, metabolic acidosis). Treat patients with symptomatic methemoglobinemia with methylene blue (this usually occurs at methemoglobin concentrations above 20% to 30%, but may occur at lower methemoglobin concentrations in patients with anemia, or underlying pulmonary or cardiovascular disorders). Administer oxygen while preparing for methylene blue therapy.
METHYLENE BLUE: INITIAL DOSE/ADULT OR CHILD: 1 mg/kg IV over 5 to 30 minutes; a repeat dose of up to 1 mg/kg may be given 1 hour after the first dose if methemoglobin levels remain greater than 30% or if signs and symptoms persist. NOTE: Methylene blue is available as follows: 50 mg/10 mL (5 mg/mL or 0.5% solution) single-dose ampules and 10 mg/1 mL (1% solution) vials. Additional doses may sometimes be required. Improvement is usually noted shortly after administration if diagnosis is correct. Consider other diagnoses or treatment options if no improvement has been observed after several doses. If intravenous access cannot be established, methylene blue may also be given by intraosseous infusion. Methylene blue should not be given by subcutaneous or intrathecal injection. NEONATES: DOSE: 0.3 to 1 mg/kg.
Concomitant use of methylene blue with serotonergic drugs, including serotonin reuptake inhibitors (SRIs), selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), norepinephrine-dopamine reuptake inhibitors (NDRIs), triptans, and ergot alkaloids may increase the risk of potentially fatal serotonin syndrome.

ALTERNATE ANTIDOTES: Kelocyanor(R) (dicobalt-EDTA) and 4-DMAP (4-dimethylaminophenol) are alternate cyanide antidotes in clinical use in various countries outside the USA. See Treatment Sections in the Cyanide Meditext(R) Medical Management for more information.

-RANGE OF TOXICITY

MINIMUM LETHAL EXPOSURE

GENERAL/SUMMARY

The minimum lethal human dose to this agent has not been delineated.
The minimal adult lethal dose for hydrocyanic acid, a potential combustion product of adiponitrile, has been estimated as 100 milligrams (Baselt & Cravey, 1989).

MAXIMUM TOLERATED EXPOSURE

CASE REPORTS

A patient who ingested a few milliliters of adiponitrile developed chest tightness, headache, weakness, unsteady gait, vertigo, cyanosis, hypotension, tachycardia, mydriasis, confusion, tonic-clonic muscular contractions, and vomiting, with onset about 20 minutes after ingestion and worsening of the condition about 2 hours later (Hartung, 1982; Smith & Kennedy, 1982).
Direct dermal contact with adiponitrile causes irritation and inflammation, and in one case resulted in serious skin destruction on a foot (Hartung, 1982; Smith & Kennedy, 1982).

ANIMAL DATA

GUINEA PIGS - No hematologic effects were noted in guinea pigs administered between 3 and 30 milligrams/kilogram subcutaneously, 6 days weekly for 40 to 70 days (Hartung, 1982).
RATS - A two-year drinking water study in rats with adiponitrile concentrations of 0.5, 5, and 50 parts per million showed that adrenal degeneration developed (Hartung, 1982).

Pregnant rats exposed to 10, 100, and 500 parts per million adiponitrile in drinking water had no changes in fertility, gestation, or viability of offspring (Hartung, 1982).

DOGS - Dogs fed 10, 100, 500, or 1000 parts per million adiponitrile in the diet had decreased food consumption and vomiting at the highest dose; no hematological changes were noted and liver and kidney function tests remained normal at 500 parts per million and below (Hartung, 1982).
RATS - Rats exposed by inhalation for 10 4-hour periods to adiponitrile concentrations of 0.1 or 0.3 milligrams/Liter developed salivation, irregular respirations, increased blood glucose, BUN, and creatinine levels, and decreased erythrocyte and leukocyte counts and hemoglobin (Smith & Kennedy, 1982). These effects had normalized by 14 days following the last exposure (Smith & Kennedy, 1982).

In these experiments, no effects were seen in rats exposed to 0.03 milligrams/Liter of adiponitrile (Smith & Kennedy, 1982). No irreversible pathological tissue changes were noted with exposures as high as 0.3 milligrams/Liter (about 62 parts per million) (Smith & Kennedy, 1982).

Carcinogenicity Ratings for CAS111-69-3 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed ; Listed as: Adiponitrile
EPA (U.S. Environmental Protection Agency, 2011): D ; Listed as: Adiponitrile

D : Not classifiable as to human carcinogenicity.

IARC (International Agency for Research on Cancer (IARC), 2016; International Agency for Research on Cancer, 2015; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2010a; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2008; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2007; IARC Working Group on the Evaluation of Carcinogenic Risks to Humans, 2006; IARC, 2004): Not Listed
NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed ; Listed as: Adiponitrile
MAK (DFG, 2002): Not Listed
NTP (U.S. Department of Health and Human Services, Public Health Service, National Toxicology Project ): Not Listed

TOXICITY AND RISK ASSESSMENT VALUES

EPA IRIS

EPA Risk Assessment Values for CAS111-69-3 (U.S. Environmental Protection Agency, 2011):

Oral:

Slope Factor:
RfD:

Inhalation:

Unit Risk:
RfC:

Drinking Water:

Unit Risk:

TOXICITY VALUES

References: (RTECS, 1997; EPA, 1985 Hartung, 1982
- LC50- (INHALATION)RAT:
- LD50- (ORAL)CAT:
- LD50- (SUBCUTANEOUS)GUINEA_PIG:
- LD50- (INTRAPERITONEAL)MOUSE:
- LD50- (ORAL)MOUSE:
- LD50- (ORAL)RABBIT:
- LD50- (ORAL)RAT:

CALCULATIONS

AMBIENT CONVERSIONS

CONVERSION FACTORS

Conversion of various units for comparing whole blood cyanide levels -

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS111-69-3 (American Conference of Governmental Industrial Hygienists, 2010):

Editor's Note: The listed values are recommendations or guidelines developed by ACGIH(R) to assist in the control of health hazards. They should only be used, interpreted and applied by individuals trained in industrial hygiene. Before applying these values, it is imperative to read the introduction to each section in the current TLVs(R) and BEI(R) Book and become familiar with the constraints and limitations to their use. Always consult the Documentation of the TLVs(R) and BEIs(R) before applying these recommendations and guidelines.

Adopted Value

Adiponitrile

TLV:

TLV-TWA: 2 ppm
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: Not Listed
Codes: Skin
Definitions:

Skin: This refers to the potential significant contribution to the overall exposure by the cutaneous route, including mucous membranes and the eyes, either by contact with vapors or, of likely greater significance, by direct skin contact with the substance. It should be noted that although some materials are capable of causing irritation, dermatitis, and sensitization in workers, these properties are not considered relevant when assigning a skin notation. Rather, data from acute dermal studies and repeated dose dermal studies in animals or humans, along with the ability of the chemical to be absorbed, are integrated in the decision-making toward assignment of the skin designation. Use of the skin designation provides an alert that air sampling would not be sufficient by itself in quantifying exposure from the substance and that measures to prevent significant cutaneous absorption may be warranted. Please see "Definitions and Notations" (in TLV booklet) for full definition.

TLV Basis - Critical Effect(s): URT and LRT irr
Molecular Weight: 108.1

For gases and vapors, to convert the TLV from ppm to mg/m(3):

[(TLV in ppm)(gram molecular weight of substance)]/24.45

For gases and vapors, to convert the TLV from mg/m(3) to ppm:

[(TLV in mg/m(3))(24.45)]/gram molecular weight of substance

AIHA WEEL Values for CAS111-69-3 (AIHA, 2006):

Listed as 1,4-Dicyanobutane
Not Listed
Ceiling or Short-term TWA:
Skin Notation: No
Dermal Sensitizer: No
Candidate WEEL: Yes
WEEL Under Review: No

NIOSH REL and IDLH Values for CAS111-69-3 (National Institute for Occupational Safety and Health, 2007):

Listed as: Adiponitrile
REL:

TWA: 4 ppm (18 mg/m(3))
STEL:
Ceiling:
Carcinogen Listing: (Not Listed) Not Listed
Skin Designation: Not Listed
Note(s):

IDLH: Not Listed

OSHA PEL Values for CAS111-69-3 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS111-69-3 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS111-69-3 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS111-69-3 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS111-69-3 (U.S. Environmental Protection Agency, 2010b):

Not Listed
Editor's Note: The D, F, and K series waste numbers and Appendix VIII to Part 261 -- Hazardous Constituents were not included. Please refer to 40 CFR Part 261.

EPA SARA Title III, Extremely Hazardous Substance List for CAS111-69-3 (U.S. Environmental Protection Agency, 2010):

Listed as: Adiponitrile
Reportable Quantity, in pounds: 1000

Only the statutory or final RQ is shown. For more information, see 40 CFR table 302.4.

Threshold Planning Quantity, in pounds:

1000
Amount necessary to be covered by this standard. See 40 CFR 355.30.

Note(s): f

f: Chemicals on the original list that do not meet toxicity criteria but because of their acute lethality, high production volume and known risk are considered chemicals of concern ("Other chemicals"). (November 17, 1986, and February 15, 1990.)

EPA SARA Title III, Community Right-to-Know for CAS111-69-3 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS111-69-3 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS111-69-3 (EPA, 2005):

Listed as: Hexanedinitrile

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions for UN/NA Number 2205 (49 CFR 172.101, 2005):

Hazardous materials descriptions and proper shipping name: Adiponitrile

Symbol(s): Not Listed
Hazard class or Division: 6.1

6.1: Poisonous materials. See 49 CFR section 173.132 for definitions.

Identification Number: UN2205
Packing Group: III

III: Packing Group III - indicates the degree of danger presented by the material is minor.

Label(s) required (if not excepted): 6.1

6.1: Poison Inhalation Hazard (inhalation hazard, Zone A or B) or Poison (other than inhalation hazard, Zone A or B; the packing group for a material is indicated in column 5 of the table.).

Special Provisions: IB3, T3, TP1

IB3: Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized, except for UN2672 (also see Special Provision IP8 in Table 3 for UN2672).
T3: Minimum test pressure (bar): 2.65; Minimum shell thickness (in mm-reference steel) (See sxn.178.274(d)): sxn.178.274(d)(2); Pressure-relief requirements (See sxn.178.275(g)): Normal; Bottom opening requirements (See sxn.178.275(d)): sxn.178.275(d)(2).
TP1: The maximum degree of filling must not exceed the degree of filling determined by the following: [Degree of filling = 97/1+alpha(tr - tf)], where tr is the maximum mean bulk temperature during transport, and tf is the temperature in degrees celsius of the liquid during filling.

Packaging Authorizations (refer to 49 CFR 173.***):

Exceptions: 153
Non-bulk packaging: 203
Bulk packaging: 241

Quantity Limitations:

Passenger aircraft or railcar: 60 L
Cargo aircraft only: 220 L

Vessel Stowage Requirements:

Vessel stowage location: A

A: The material may be stowed "on deck" or "under deck" on a cargo vessel and on a passenger vessel.

Vessel stowage other: Not Listed

ICAO International Shipping Name for UN2205 (ICAO, 2002):

Proper Shipping Name: Adiponitrile
UN Number: 2205

LABELS

NFPA

NFPA Hazard Ratings for CAS111-69-3 (NFPA, 2002):

Listed as: Adiponitrile
Hazard Ratings:

Health Rating (Blue): 3

(3) Seriously toxic material. Short term exposure could cause serious temporary or residual injury even though prompt medical treatment is given. Includes known or suspect small animal carcinogens, mutagens, or teratogens.

Flammability Rating (Red): 2

(2) Combustible. Materials that must be moderately heated before ignition can occur. Including liquids having a flash point above 100 degrees F, and solids that readily give off flammable vapors.

Instability Rating (Yellow): 1

(1) Materials which are normally stable, but which can become unstable at elevated temperatures and pressures, or which may react with water with some release of energy, but not violently.

Oxidizer/Water-Reactive Designation: Not Listed

-HANDLING AND STORAGE

STORAGE

CONTAINER

Adiponitrile is usually available only in laboratory quantities, since most of the commercial product is made in captive plants (NFPA, 1986).

ROOM/CABINET RECOMMENDATIONS

Protect against physical damage (NFPA, 1986).
Store in a cool, dry, well-ventilated location, away from any area where the fire hazard may be acute (NFPA, 1986).
Separate from other storage (NFPA, 1986).
Outside or detached storage is preferred (NFPA, 1986).

-PERSONAL PROTECTION

SUMMARY

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Wear positive pressure self-contained breathing apparatus (SCBA).
Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection.
Structural firefighters' protective clothing provides limited protection. fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.

Avoid inhalation, ingestion and skin contact. Wear positive pressure breathing apparatus and special protective clothing for fire fighting and safe handling (EPA, 1985).

RESPIRATORY PROTECTION

Respiratory protection (positive pressure breathing apparatus) is recommended for fire fighting and safe handling of adiponitrile (EPA, 1985).

Specific recommendations for respiratory protection for adiponitrile were not found in available references at the time of this review.

Refer to "Recommendations for respirator selection" in the NIOSH Pocket Guide to Chemical Hazards on TOMES Plus(R) for respirator information.

PROTECTIVE CLOTHING

CHEMICAL PROTECTIVE CLOTHING. Search results for CAS 111-69-3.

All data are compiled from published sources and are NOT recommended specifically by Truven Health Analytics. The appearance of specific manufacturers or products in this section does not represent an endorsement by Truven Health Analytics. No attempt has been made to verify the data presented. All product recommendations should be confirmed with the specific manufacturer for verification of product performance.
CLOTHING

Plastic Laminate

DuPont Personal Protection

Tychem 10,000

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem 7500

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem 9400

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (DuPont, 2002)

Tychem BR

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: Not Listed
Citation: (DuPont, 2002)

Tychem LV

Degradation Rating: Not Listed
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: Not Listed
Citation: (DuPont, 2003)

Tychem QC

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem SL

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): Not Tested
Permeation Rate (mcg/cm2/min): Not Tested
Notes: liquid
Citation: (DuPont, 2002)

Tychem ThermoPro

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.05
Notes: Not Listed
Citation: (DuPont, 2003)

Tychem TK

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: Not Listed
Citation: (DuPont, 2002)
Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (DuPont, 2002)

FOOTWEAR

Specific recommendations and test data for this product type were not found in the available manufacturers' product literature.

GLOVES

Specific recommendations and test data for this product type were not found in the available manufacturers' product literature.

GENERAL INFORMATION

This section provides a compilation of chemical resistance information and test data for specific protective clothing products. Chemical resistance information includes both degradation resistance ratings and permeation resistance data. This information is designed to assist in the selection of appropriate protective clothing. Only data on specific products and manufacturers are included. Generic information or recommendations are not provided since significant differences can exist in the chemical resistance for apparent similar product types.
Specific product information is organized by general product type (gloves, garments, and footwear), material type, and manufacturer. The category 'garments' may include totally encapsulating suits, splash suits, as well as other items (e.g., coveralls, jackets, and aprons). Specific manufacturers should be contacted to determine the features of available styles/models.
In addition to chemical resistance information, there are many critical variables in the selection of protective clothing which cannot be represented in this summary of the literature. Some factors to be considered in choosing protective clothing include, but are not limited to: overall clothing integrity, physical hazard resistance, durability, human factors, ease of decontamination, and cost. Overall clothing integrity refers to a specific design's ability to offer consistent protection for all clothing-covered areas of the body. Physical hazards include resisting the effects of abrasion, cuts, tears, and punctures. Human factors entail effects on wearer mobility, visibility, and hearing for garments; dexterity, tactility, and grip for gloves; ankle support and weight for footwear; and, any effect of the clothing on the function of the wearer. There are several variations in the design for gloves, garments, and footwear that affect these factors. Protective clothing must properly be sized and correctly fit the wearer to ensure its proper use and function.
As required in the U.S.A., protective clothing should be selected based on a risk assessment of the workplace. This risk assessment must account for the identification of existing as well as potential hazards and involve the recommendation of protective clothing appropriate for the identified hazards. Therefore, the recommendations in this section should not be used as the sole basis for decisions on choice of protective clothing, but rather should be used as a tool by qualified occupational health and safety professionals or other technically qualified persons in conjunction with a review of all mitigating factors. Consult the OSHA PPE Standard (29 CFR 1910.132 - 1910.138) for regulations and additional guidance regarding the selection and use of protective clothing and equipment. For general information on protective clothing selection, refer to the "PERSONAL PROTECTIVE EQUIPMENT - OSHA PUB 3077" document.
PROTECTIVE CLOTHING SELECTION

Determine the type of protective clothing item needed based on a risk assessment (e.g., gloves, garments, footwear).
For high risk situations, choose clothing that covers all parts of the body that may be exposed. In many cases, multiple clothing items will be required. Low risk situations may permit partial body protective clothing. Select protective clothing products that have reported chemical resistance data. High risk situations involving full body clothing or extended chemical contact often require permeation resistance data to determine the barrier effectiveness of materials used in the construction of clothing. Relatively low risk situations, where only splash or incidental exposure occur, may allow use of protective clothing based on degradation or penetration resistance data. Specifics on the interpretation of chemical resistance data are presented below.
Other factors must be considered in addition to chemical resistance. The selected chemical protective clothing item should offer the optimal combination of protection against identified hazards while allowing maximum function and comfort.

INTERPRETATION OF DEGRADATION RATINGS

Degradation refers to physical changes in a material as the result of chemical exposure. Degradation may become evident in visible changes, such as discoloration, swelling, delamination, deterioration, or disintegration. Degradation effects may also be measured by weight change or other changes in a material's physical properties (e.g., strength, elasticity, hardness).
Degradation resistance ratings are provided by manufacturers to rate the amount of degradation that occurs for a particular protective clothing material when contacted by a chemical. All degradation ratings are qualitative and include ratings, such as "EXCELLENT," "GOOD," "FAIR," "POOR," and "NOT RECOMMENDED." There is no standard test method for the measurement of chemical degradation resistance; therefore, manufacturer ratings may be based on different testing approaches. This makes comparison of degradation ratings between manufacturers unreliable.
The use of degradation resistance ratings alone to recommend protective clothing, particularly for high hazard situations, should be avoided. Degradation resistance testing does not directly assess the barrier quality of protective clothing, since materials can show relatively little degradation but still allow either permeation or penetration by a chemical. Degradation resistance ratings can be used to exclude protective clothing materials from consideration. Protective clothing materials with a "NOT RECOMMENDED" degradation resistance rating should never be used.
For some products, the rating "NO PENETRATION" is provided. This refers to penetration resistance test results that are based on a different procedure (American Society for Testing and Materials (ASTM) Standard Test Method F 903). Penetration resistance testing involves placing a material sample in a test cell, exposing the exterior side of the material to a chemical, and then observing the interior side of the material for visible signs of liquid penetration. Part of the test is conducted at an elevated pressure. Test results are reported as pass (no penetration) or fail (penetration detected). Unlike degradation testing, penetration testing provides an assessment of protective clothing material barrier performance. Since penetration resistance testing examines only observable amounts of liquid penetration, permeation may still occur. The use of penetration resistance data must be restricted to liquid chemicals, and should be limited to scenarios where there is no reasonable vapor exposure hazard under the conditions of exposure.

INTERPRETATION OF PERMEATION DATA

Permeation is the process of chemical movement through a material on a molecular level. Permeation resistance refers to the ability of a material to retard or prevent chemical movement through it. Permeation may occur without any visible signs of degradation.
Permeation resistance is measured using a test cell which is divided into two halves by a protective clothing specimen. Chemical is placed on the challenge side, while the collection side is periodically monitored for permeating chemical. Permeation data were obtained in accordance with the American Society for Testing and Materials (ASTM) Standard Test Method F 739 (Resistance of Materials Used in Protective Clothing to Permeation by Liquids and Gases), unless stated otherwise. In the case of chemicals that are classified as warfare agents, the data were obtained in accordance with the Military Standard 282 (MIL-STD-282) (Military Standard, Filter Units, Protective Clothing, Gas-Mask Components, and Related Products: Performance Test Methods).
Permeation rate is the amount of chemical that passes through a material for a measured surface area per unit time. In this section, permeation rate is expressed in micrograms per square centimeter per minute (mcg/cm(2)/min). The reported permeation rate is either the steady-state rate or the maximum rate observed during testing. In some cases, very large permeation rates exceed measurement techniques and are reported as ">" (greater than) or "HIGH."
Breakthrough time is the elapsed time, in minutes, from the time the chemical comes in contact with the material exterior surface, to the time that chemical is detected on the interior surface. When no breakthrough is detected, the breakthrough time is report as ">" the testing period. If permeation breakthrough is rapid, results are reported as "<" (less than) the earlier sampling time or as "IMMEDIATELY" (which usually means breakthrough in less than 4 minutes).
The breakthrough time should exceed the expected use period of the selected protective clothing. Additionally, there are several other factors that must be taken into account to provide appropriate protection.
Permeation testing is usually conducted with full strength, undiluted chemical for the duration of the test period. Actual exposures may involve diluted chemical for short or intermittent exposure periods.
Permeation testing is usually conducted at room temperature. Permeation occurs faster at elevated temperatures (short breakthrough times and higher permeation rates) and slower at reduced temperatures (long breakthrough times and lower permeation rates).
Permeation resistance of mixtures cannot usually be determined on the basis of the individual chemicals making up the mixture. Synergistic effects may occur and result in more rapid permeation than accounted for by the individual mixture chemicals.
Permeation rates may be used to calculate potential wearer exposure; however, several assumptions must be made about the extent of exposure and condition of clothing wear. Furthermore, there are few chemicals with dermal exposure limits, making it difficult to determine an acceptable skin exposure level.

COMPANY INFORMATION

DuPont Personal Protection P. O. Box 80705 Wilmington, DE 19880-0705 USA Phone: (302) 774-1000 Toll-Free: (800) 931-3456 Website: http://personalprotection.dupont.com Email: personalprotection@usa.dupont.com

REFERENCES

CHEMICAL PROTECTIVE CLOTHING CITATIONS

The following sources were consulted for chemical protective clothing data:

(Ansell-Edmont, 2001)
(Bata Shoe Company, 1995)
(Best Manufacturing, 2002)
(Best Manufacturing, 2004)
(Boss Manufacturing Company, 1998)
(ChemFab Corporation, 1993)
(Comasec Safety, Inc., 2003)
(Comasec Safety, Inc., 2003a)
(DuPont, 2002)
(DuPont, 2002)
(DuPont, 2003)
(Guardian Manufacturing Group, 2001)
(ILC Dover, Inc., 1998)
(Kappler Inc., 2001)
(Kimberly-Clark, 2002)
(LaCrosse-Rainfair, 1997)
(MAPA Professional, 2003)
(MAPA Professional, 2004)
(Mar-Mac Manufacturing, Inc, 1995)
(Marigold Industrial, 2003)
(Memphis Glove Company, 2001)
(Montgomery Safety Products, 1995)
(Nat-Wear, 2001)
(Neese Industries, Inc., 2003)
(North, 2002)
(North, 2002)
(Playtex, 1995)
(River City, 1995)
(Safety 4, 2002)
(Servus, 1995)
(Standard Safety Equipment, 1995)
(Tingley, 2002)
(Trelleborg-Viking, Inc., 2001)
(Trelleborg-Viking, Inc., 2002)
(Wells Lamont Industrial, 2002)
(Workrite, 1997)

-PHYSICAL HAZARDS

FIRE HAZARD

SUMMARY

POTENTIAL FIRE OR EXPLOSION HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)
- Combustible material: may burn but does not ignite readily.
- When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards.
- Those substances designated with a "P" may polymerize explosively when heated or involved in a fire.
- Contact with metals may evolve flammable hydrogen gas.
- Containers may explode when heated.
- Runoff may pollute waterways.
- Substance may be transported in a molten form.
Adiponitrile is a flammable liquid. Its vapor forms explosive mixtures with air. Wear special protective clothing when fire fighting. Use water spray, dry chemical, standard foam, fog, carbon dioxide, or Halon to extinguish fires (NFPA, 1986).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS111-69-3 (NFPA, 2002):

Listed as: Adiponitrile
Flammability Rating: 2

(2) Combustible. Materials that must be moderately heated before ignition can occur. Including liquids having a flash point above 100 degrees F, and solids that readily give off flammable vapors.

FIRE CONTROL/EXTINGUISHING AGENTS

SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Dry chemical, CO2 or water spray.

LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Dry chemical, CO2, alcohol-resistant foam or water spray.
Move containers from fire area if you can do it without risk.
Dike fire control water for later disposal; do not scatter the material.

TANK OR CAR/TRAILER LOAD FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Fight fire from maximum distance or use unmanned hose holders or monitor nozzles.
Do not get water inside containers.
Cool containers with flooding quantities of water until well after fire is out.
Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank.
ALWAYS stay away from tanks engulfed in fire.

NFPA Extinguishing Methods for CAS111-69-3 (NFPA, 2002):

Listed as: Adiponitrile
Extinguishing Method(s): 5

5: Flammable liquid fires can be extinguished using carbon dioxide, dry chemical, foam, and vaporizing liquid extinguishers, as long as the fires are small to moderate in size and the flammable liquid reservoir is shallow. Use of foam to form a blanket over a flammable liquid is not effective when the liquid is water-soluble. Certain alcohol resistant foams are effective extinguishing agents for polar, non-polar, and water-soluble liquid fires. These foams are preferred for fighting flammable liquid fires except those that involve water reactive flammable liquids.

Use chemical protective suit with self-contained breathing apparatus (EPA, 1985).

Use water to keep fire-exposed containers cool. If a leak or spill has not ignited, use water spray to disperse the vapors and to provide protection for personnel attempting to stop a leak (NFPA, 1986).

COMBUSTION TOXICITY

When heated to decomposition, adiponitrile emits toxic fumes of cyanide (Sax & Lewis, 1989).
Combustion products may contain hydrocyanic acid (HCN) (EPA, 1985).

EXPLOSION HAZARD

Adiponitrile vapors form explosive mixtures with air (NFPA, 1986).

Vapor may explode if ignited in an enclosed area (EPA, 1985).

Cylinders may explode in the heat of fire (HSDB , 1990).

DUST/VAPOR HAZARD

Adiponitrile's low vapor pressure at room temperature makes exposure to harmful concentrations of its vapors unlikely if handled with reasonable care in well ventilated areas (Sax & Lewis, 1989).

Adiponitrile vapors form explosive mixtures with air (NFPA, 1986).

Vapor may explode if ignited in an enclosed area (EPA, 1985).

REACTIVITY HAZARD

Adiponitrile can react with oxidizing materials (Lewis, 1996).

Reactive only under extreme conditions (OHM/TADS , 1997).

EVACUATION PROCEDURES

SUMMARY

Editor's Note: This material is not listed in the Table of Initial Isolation and Protective Action Distances.

SPILL - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

Increase, in the downwind direction, as necessary, the isolation distance of at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids in all directions.

FIRE - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions.

PUBLIC SAFETY MEASURES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)

CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number:

MEXICO:

SETIQ:

01-800-00-214-00 in the Mexican Republic;
For calls originating in Mexico City and the Metropolitan Area: 5559-1588;
For calls originating elsewhere, call: 011-52-555-559-1588.

CENACOM:

01-800-00-413-00 in the Mexican Republic;
For calls originating in Mexico City and the Metropolitan Area: 5550-1496, 5550-1552, 5550-1485, or 5550-4885;
For calls originating elsewhere, call: 011-52-555-550-1496, or 011-52-555-550-1552; 011-52-555-550-1485, or 011-52-555-550-4885.

ARGENTINA:

CIQUIME:

0-800-222-2933 in the Republic of Argentina;
For calls originating elsewhere, call: +54-11-4613-1100.

BRAZIL:

PRÓ-QUÍMICA:

0-800-118270 (Toll-free in Brazil);
For calls originating elsewhere, call: +55-11-232-1144 (Collect calls are accepted).

COLUMBIA:

CISPROQUIM:

01-800-091-6012 in Colombia;
For calls originating in Bogotá, Colombia, call: 288-6012;
For calls originating elsewhere, call: 011-57-1-288-6012.

CANADA:

CANUTEC:

613-996-6666 (Collect calls are accepted);
*666 cellular (in Canada only).

UNITED STATES:

CHEMTREC®:

1-800-424-9300 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
703-527-3887 for calls originating elsewhere (Collect calls are accepted).

CHEM-TEL, INC.:

1-800-255-3924 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
813-248-0585 for calls originating elsewhere (Collect calls are accepted).

INFOTRAC:

1-800-535-5053 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
352-323-3500 for calls originating elsewhere (Collect calls are accepted).

3E COMPANY:

1-800-451-8346 (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
760-602-8703 for calls originating elsewhere (Collect calls are accepted).

NATIONAL RESPONSE CENTER (NRC):

1-800-424-8802 - (24 hours) (Toll-free in the U.S., Canada, and the U.S. Virgin Islands);
202-267-2675 for calls in the District of Columbia.

MILITARY SHIPMENTS:

703-697-0218 - Explosives/ammunition incidents (Collect calls are accepted);
1-800-851-8061 - All other dangerous goods incidents.

NATIONWIDE POISON CONTROL CENTER (United States only):

1-800-222-1222 (Toll-free in the U.S.).

For additional details see the section entitled "WHO TO CALL FOR ASSISTANCE" under the ERG Instructions.
As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
Keep unauthorized personnel away.
Stay upwind.
Keep out of low areas.
Ventilate enclosed areas.

There was no specific information on evacuation procedures for adiponitrile in available references at the time of this review. Generally, the area of release should be isolated and access to the area should be denied (EPA, 1985).

AIHA ERPG Values for CAS111-69-3 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS111-69-3 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Adiponitrile
TEEL-0 (units = ppm): 2
TEEL-1 (units = ppm): 3.85
TEEL-2 (units = ppm): 3.85
TEEL-3 (units = ppm): 150
Definitions:

TEEL-0: The threshold concentration below which most people will experience no adverse health effects.
TEEL-1: The airborne concentration (expressed as ppm [parts per million] or mg/m(3) [milligrams per cubic meter]) of a substance above which it is predicted that the general population, including susceptible individuals, could experience notable discomfort, irritation, or certain asymptomatic, nonsensory effects. However, these effects are not disabling and are transient and reversible upon cessation of exposure.
TEEL-2: The airborne concentration (expressed as ppm or mg/m(3)) of a substance above which it is predicted that the general population, including susceptible individuals, could experience irreversible or other serious, long-lasting, adverse health effects or an impaired ability to escape.
TEEL-3: The airborne concentration (expressed as ppm or mg/m(3)) of a substance above which it is predicted that the general population, including susceptible individuals, could experience life-threatening adverse health effects or death.

AEGL Values for CAS111-69-3 (National Research Council, 2010; National Research Council, 2009; National Research Council, 2008; National Research Council, 2007; NRC, 2001; NRC, 2002; NRC, 2003; NRC, 2004; NRC, 2004; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; United States Environmental Protection Agency Office of Pollution Prevention and Toxics, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2009; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2008; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2007; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2005; National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances, 2006; 62 FR 58840, 1997; 65 FR 14186, 2000; 65 FR 39264, 2000; 65 FR 77866, 2000; 66 FR 21940, 2001; 67 FR 7164, 2002; 68 FR 42710, 2003; 69 FR 54144, 2004):

Not Listed

NIOSH IDLH Values for CAS111-69-3 (National Institute for Occupational Safety and Health, 2007):

Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)
- ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area).
- Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
- Stop leak if you can do it without risk.
- Prevent entry into waterways, sewers, basements or confined areas.
- Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
- DO NOT GET WATER INSIDE CONTAINERS.
RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 153 (ERG, 2004)
- Wear positive pressure self-contained breathing apparatus (SCBA).
- Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection.
- Structural firefighters' protective clothing provides limited protection. fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
Wear self-contained positive pressure breathing apparatus and special protective clothing. Isolate area and deny entry. Ventilate closed spaces before entering them. Isolate spilled material for later disposal. For small spills, use sand or other noncombustible absorbent material. For large spills, dike far ahead of spill for later disposal (EPA, 1985).
For laboratory spills, the following two methods are recommended for cleanup (ITI, 1988):
- Absorb with papers. Allow to evaporate on a glass or iron dish in a hood. Dispose by burning the paper.
- Add excessive sodium hydroxide and calcium hypochlorite solution. Transfer into a large beaker.
For laboratory disposal and waste treatment: Add by stirring excessive alcoholic sodium hydroxide. After one hour, evaporate alcohol and add sufficient calcium hypochlorite (ITI, 1988).
Cleanup procedures for in-situ amelioration: Adiponitrile responds well to nitrile acclimated seed. Caustic can be used to suppress HCN evolution and help convert cyanide to degradable cyanate. This can be hazardous and should be attempted only in controlled waters. Best approach is to leave as nitrile and adsorb on activated carbon or peat. Seek professional environmental engineering assistance through EPA's Environmental Response Team (ERT), Edison, NJ, 24-hour number (201) 321-6660 (OHM/TADS , 1990).
- Beach/shore restoration: Do not burn (OHM/TADS , 1990).
- Countermeasure material availability (OHM/TADS , 1990):

SMALL LEAK/SPILL

Wear self-contained positive pressure breathing apparatus and special protective clothing. Do not touch spilled material. Stop leak if you can do so without risk. Stay upwind and out of low areas. Isolate area and deny entry (EPA, 1985).

LARGE LEAK/SPILL

Wear self-contained positive pressure breathing apparatus and special protective clothing. Do not touch spilled material. Stop leak if you can do so without risk. Stay upwind and out of low areas. Isolate area and deny entry (EPA, 1985).
Dike far ahead of large spills for later disposal (EPA, 1985).

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

Dangerous to aquatic life in high concentrations. Fouling to shorelines. May be dangerous if it enters water intakes (CHRIS , 1990).

Degrades at moderate rate in river water. Seed acclimation greatly increases degradation (OHM/TADS , 1990).

ENVIRONMENTAL FATE AND KINETICS

OTHER

OTHER
- There was no information on the environmental kinetics of adiponitrile in available references at the time of this review.

ENVIRONMENTAL TOXICITY

Aquatic toxicity: 1250 ppm/24 hr/sunfish/TLm/fresh water (CHRIS , 1990).

Biological oxygen demand (BOD): 40 percent, 5 days (CHRIS , 1990).

No food chain concentrations were noted, but chronic hazard indicates some type of build-up may occur (OHM/TADS , 1990).

All animals and aquatic life are endangered by potential cyanide production. Cyanide threat stems from thermal decomposition. Nitrile itself is not extremely hazardous to fish life. Waterfowl endangered by slick (OHM/TADS , 1990).

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

108.16 (Lewis, 1996)

DESCRIPTION/PHYSICAL STATE

Adiponitrile is a water-white to yellowish colored, nearly odorless combustible liquid which floats on water (Lewis, 1996; CHRIS , 1997; EPA, 1985).

No information found at the time of this review.

VAPOR PRESSURE

2 mmHg (at 119 degrees C) (HSDB , 1990)

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

LIQUID: 0.965 (at 20/4 degrees C) (EPA, 1985)

FREEZING/MELTING POINT

FREEZING POINT

2.4 degrees C; 36 degrees F (CHRIS , 1990)

MELTING POINT

2.3 degrees C (Sax & Lewis, 1989)
1 degree C (HSDB , 1990)
1-3 degrees C (Hartung, 1982)

BOILING POINT

295 degrees C (NFPA, 1986; Sax & Lewis, 1989; EPA, 1985)

563 degrees F (NFPA, 1986; EPA, 1985)

290 degrees C; 554 degrees F (CHRIS , 1990)

FLASH POINT

200 degrees F (NFPA, 1986)

199.4 degrees F (open cup) (Sax & Lewis, 1989)

93 degrees C (NFPA, 1986; OHM/TADS , 1990; ITI, 1988)

EXPLOSIVE LIMITS

LOWER

1.0% (at 200 degrees C) (EPA, 1985)

UPPER

- No information found at the time of this review.

SOLUBILITY

IN WATER

Adiponitrile is slightly soluble in water (NFPA, 1986; Lewis, 1993).

IN ORGANIC SOLVENTS

Adiponitrile is slightly soluble in ether (NFPA, 1986; Lewis, 1993).
It is soluble in alcohol, acetone, and chloroform (Lewis, 1987; (Snyder et al, 1990) and ethanol (ITI, 1988).

OTHER/PHYSICAL

HEAT OF COMBUSTION

-14,230 Btu/lb; -7910 cal/g; -331x10(5) J/kg (CHRIS , 1997)

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National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances: Acute Exposure Guideline Levels (AEGLs) for Selenium Hexafluoride (Proposed). United States Environmental Protection Agency. Washington, DC. 2006f. Available from URL: http://www.regulations.gov/search/Regs/contentStreamer?objectId=090000648020ec55&disposition=attachment&contentType=pdf. As accessed 2010-08-16.

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