TRICHLOROACETIC ACID

Trichloroacetic acid is used as a medication, a protein precipitant, a reagent for albumin detection, and an insecticide. It also is used in organic synthesis, in microscopy as a decalcifier and fixative, and as an herbicide when in its sodium salt form (Budavari, 1996a; HSDB , 1998; ITI, 1995; Lewis, 1993).

FORMS

Trichloroacetic acid solution is the solid form of the compound dissolved in water (AAR, 1996).
The compound's 99% technical grade is a mixture of 1,2,4- and 1,2,3-isomers distilled at 213-219 degrees C (Lewis, 1993). Trichloroacetic acid also is available in a 95% purity grade (HSDB , 1998).

SOURCES

Trichloroacetic acid is produced by combining acetic acid and chlorine using exhaustive chlorination (Ashford, 1994).
It also is produced by using fuming nitric acid to treat chloral hydrate and from glacial acetic acid when chlorine combines with sunlight, UV radiation, or catalysts (Lewis, 1993).

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

Trichloroacetic acid is corrosive to the eyes, skin, and mucous membranes.

INGESTION - Ingestion of trichloroacetic acid may cause vomiting, diarrhea, and intense burning of the mouth, throat, esophagus, and stomach. The throat may swell causing airway compromise. The presence of stridor, vomiting, and drooling are associated with serious esophageal injury in most cases. Delayed sequelae of caustic ingestion include trachoesophageal and aortoesophageal fistulae, strictures of the mouth, esophagus, and stomach, and esophageal carcinoma.

INHALATION - Inhalation can produce upper respiratory tract irritation, coughing, choking, dizziness, weakness, swelling of the throat and lungs, dyspnea, and pulmonary edema. Long-term exposure to fumes may produce irritation of the throat and lungs with persistent cough.

OCULAR - Ocular exposure may cause extremely painful burns and sores on the eye which can result in blindness.

DERMAL - Dermal contact may cause thickening of the skin, burns, and blisters.

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

TCA is corrosive to the skin and eyes, but is not readily absorbed through intact skin (ACGIH, 1992). Acute exposure has caused mild to moderate burns of the eyes and skin (Hathaway et al, 1991). TCA dust is extremely irritating to the nose and throat (HSDB , 1998).

TCA rapidly penetrates and fixes tissue. Systemic effects following ingestion are secondary to gastrointestinal damage and acidosis. Ingestion causes severe burning pain in the mouth, throat, and abdomen, followed by bloody vomiting and diarrhea (HSDB , 1998).

Effects of acute inhalation include coughing, choking, dizziness, and weakness, followed by air hunger, pulmonary edema, frothy sputum, cyanosis, hypotension, tachycardia, and an increase in red blood cell count and hematocrit (HSDB , 1998).

CHRONIC CLINICAL EFFECTS

Chronic inhalation of TCA may cause erosion of the tooth enamel, jaw necrosis, bronchial irritation, chronic cough, frequent attacks of pneumonia, and gastrointestinal disturbances (HSDB). It has been speculated that formation and accumulation of TCA may be responsible for the psycho-organic syndrome (solvent encephalopathy) found in some patients with chronic trichloroethylene exposure (Ertle, 1972).

Guinea pigs developed skin irritation and dermatitis after chronic skin application of TCA (Roper & Jones, 1985).

-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

FIRST AID

EYE EXPOSURE - Immediately wash the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately. Contact lenses should not be worn when working with this chemical.
DERMAL EXPOSURE - Immediately flush the contaminated skin with water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. Get medical attention promptly.
INHALATION EXPOSURE - Move the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration resuscitation. Keep the affected person warm and at rest. Get medical attention as soon as possible.
ORAL EXPOSURE - If this chemical has been swallowed, get medical attention immediately.
TARGET ORGANS - Eyes, skin, respiratory system, and gastrointestinal tract (National Institute for Occupational Safety and Health, 2007).

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.
If bronchospasm and wheezing occur, consider treatment with inhaled sympathomimetic agents.
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 -

Remove contaminated clothes. Irrigate exposed skin with copious amounts of water for at least 15 minutes or longer, depending on concentration, amount, and duration of exposure. A physician may need to examine the area if irritation or pain persist.
Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.

EYE EXPOSURE -

HOME IRRIGATION - Exposed eyes should be irrigated with copious amounts of water for at least 30 minutes. an examination should always be performed. Ophthalmologic consultation should be obtained.
CAUSTIC EYE DECONTAMINATION: Immediately irrigate each affected eye with copious amounts of water or sterile 0.9% saline for about 30 minutes. Irrigating volumes up to 20 L or more have been used to neutralize the pH. After this initial period of irrigation, the corneal pH may be checked with litmus paper and a brief external eye exam performed. Continue direct copious irrigation with sterile 0.9% saline until the conjunctival fornices are free of particulate matter and returned to pH neutrality (pH 7.4). Once irrigation is complete, a full eye exam should be performed with careful attention to the possibility of perforation.
EYE ASSESSMENT: The extent of eye injury (degree of corneal opacification and perilimbal whitening) may not be apparent for 48 to 72 hours after the burn.

ORAL EXPOSURE -

MUCOSAL DECONTAMINATION: If no respiratory compromise is present, administer milk or water as soon as possible after ingestion. The exact ideal amount is unknown; no more than 8 ounces (240 mL) in adults and 4 ounces (120 mL) in children is recommended to minimize the risk of vomiting. Patients should not be forced to drink after ingestion of an acid, nor should they be allowed to drink larger volumes since this may induce vomiting, and thereby re-exposure of the injured tissues to the corrosive acid. Dilution may only be helpful if performed in the first seconds to minutes after ingestion.
GASTRIC DECONTAMINATION: Ipecac contraindicated. Activated charcoal is not recommended as it may interfere with endoscopy and will not reduce injury to GI mucosa. Consider insertion of a small, flexible nasogastric or orogastric tube to suction gastric contents after recent large ingestion of a strong acid; the risk of further mucosal injury or iatrogenic esophageal perforation must be weighed against potential benefits of removing any remaining acid from the stomach.
NEUTRALIZATION - Is contraindicated.
Keep patient NPO following mucosal decontamination until after endoscopy consultation.
ENDOSCOPY: Because acid ingestion may cause severe gastric burns with relatively few initial signs and symptoms, endoscopic evaluation is recommended within 24 hours in any patient with a definite history of ingesting a strong acid, even if asymptomatic. If burns are found, follow 10 to 20 days later with a barium swallow.
PHARMACOLOGIC TREATMENT: The use of corticosteroids is controversial. Patients with first degree burns generally do well and rarely develop strictures. Corticosteroids are generally not beneficial in these patients. Some authors have advocated the use of corticosteroids for second degree, deep-partial thickness burns within 48 hours of ingestion in patients without gastrointestinal bleeding or evidence of perforation. However, no well-controlled human study has documented efficacy. Corticosteroids are generally not beneficial in patients with second degree, superficial-partial thickness burns. Some authors have recommended steroids in patients with third degree burns. A high percentage of patients with third degree burns go on to develop strictures with or without corticosteroid therapy and the risk of infection and perforation may be increased by corticosteroid use. Most authors feel that the risk outweighs any potential benefit and routine use is not recommended. Antibiotics are indicated for suspected perforation or infection and in patients receiving corticosteroids.
SURGICAL OPTIONS: Initially, if severe esophageal burns are found a string may be placed in the stomach to facilitate later dilation. Insertion of a specialized nasogastric tube after confirmation of a circumferential burn may prevent strictures. Dilation is indicated after 2 to 4 weeks if strictures are confirmed; if unsuccessful, either colonic intraposition or gastric tube placement may be performed. Consider early laparotomy in patients with severe esophageal and/or gastric burns.

-RANGE OF TOXICITY

MINIMUM LETHAL EXPOSURE

GENERAL/SUMMARY

The minimum lethal human dose to this agent has not been delineated.

MAXIMUM TOLERATED EXPOSURE

GENERAL/SUMMARY

The maximum tolerated human exposure to this agent has not been delineated.

Carcinogenicity Ratings for CAS76-03-9 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed ; Listed as: Trichloroacetic acid
ACGIH (American Conference of Governmental Industrial Hygienists, 2010): A3 ; Listed as: Trichloroacetic acid

A3 :Confirmed Animal Carcinogen with Unknown Relevance to Humans: The agent is carcinogenic in experimental animals at a relatively high dose, by route(s) of administration, at site(s), of histologic type(s), or by mechanism(s) that may not be relevant to worker exposure. Available epidemiologic studies do not confirm an increased risk of cancer in exposed humans. Available evidence does not suggest that the agent is likely to cause cancer in humans except under uncommon or unlikely routes or levels of exposure.

EPA (U.S. Environmental Protection Agency, 2011): C ; Listed as: Trichloroacetic acid

C : Possible human carcinogen.

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): 3 ; Listed as: Trichloroacetic acid

3 : The agent (mixture or exposure circumstance) is not classifiable as to its carcinogenicity to humans. This category is used most commonly for agents, mixtures and exposure circumstances for which the evidence of carcinogenicity is inadequate in humans and inadequate or limited in experimental animals. Exceptionally, agents (mixtures) for which the evidence of carcinogenicity is inadequate in humans but sufficient in experimental animals may be placed in this category when there is strong evidence that the mechanism of carcinogenicity in experimental animals does not operate in humans. Agents, mixtures and exposure circumstances that do not fall into any other group are also placed in this category.

NIOSH (National Institute for Occupational Safety and Health, 2007): Not Listed ; Listed as: Trichloroacetic acid
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 CAS76-03-9 (U.S. Environmental Protection Agency, 2011):

Oral:

Slope Factor:
RfD:

Inhalation:

Unit Risk:
RfC:

Drinking Water:

Unit Risk:

TOXICITY VALUES

Trichloroacetic Acid
- LD50- (ORAL)MOUSE:
- LD50- (SUBCUTANEOUS)MOUSE:
- LD50- (ORAL)RAT:
- LDLo- (INTRAPERITONEAL)MOUSE:
- TDLo- (INTRAPERITONEAL)MOUSE:
- TDLo- (ORAL)MOUSE:
Trichloroacetic Acid Sodium Salt
- LD50- (ORAL)MOUSE:
- LD50- (ORAL)RAT:

CALCULATIONS

AMBIENT CONVERSIONS

1 ppm = 6.68 mg/m(3) (at 68 degrees F and 760 mmHg) (NIOSH , 1998)

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS76-03-9 (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.

Under Study

Trichloroacetic acid

TLV:

TLV-TWA:
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: Not Listed
Codes: Not Listed
Definitions: Not Listed

TLV Basis - Critical Effect(s):
Molecular Weight:

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

Adopted Value

Trichloroacetic acid

TLV:

TLV-TWA: 1 ppm
TLV-STEL:
TLV-Ceiling:

Notations and Endnotes:

Carcinogenicity Category: A3
Codes: Not Listed
Definitions:

A3: Confirmed Animal Carcinogen with Unknown Relevance to Humans: The agent is carcinogenic in experimental animals at a relatively high dose, by route(s) of administration, at site(s), of histologic type(s), or by mechanism(s) that may not be relevant to worker exposure. Available epidemiologic studies do not confirm an increased risk of cancer in exposed humans. Available evidence does not suggest that the agent is likely to cause cancer in humans except under uncommon or unlikely routes or levels of exposure.

TLV Basis - Critical Effect(s): Eye and URT irr
Molecular Weight: 163.39

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 CAS76-03-9 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS76-03-9 (National Institute for Occupational Safety and Health, 2007):

Listed as: Trichloroacetic acid
REL:

TWA: 1 ppm (7 mg/m(3))
STEL:
Ceiling:
Carcinogen Listing: (Not Listed) Not Listed
Skin Designation: Not Listed
Note(s):

IDLH: Not Listed

OSHA PEL Values for CAS76-03-9 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS76-03-9 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS76-03-9 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS76-03-9 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS76-03-9 (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 CAS76-03-9 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS76-03-9 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS76-03-9 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS76-03-9 (EPA, 2005):

Listed as: Acetic acid, trichloro-

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions for UN/NA Number 1839 (49 CFR 172.101, 2005):

Hazardous materials descriptions and proper shipping name: Trichloroacetic acid

Symbol(s): Not Listed
Hazard class or Division: 8

8: Corrosive material. See 49 CFR section 173.136 for definitions.

Identification Number: UN1839
Packing Group: II

II: Packing Group II - indicates the degree of danger presented by the material is medium.

Label(s) required (if not excepted): 8

8: Corrosive.

Special Provisions: A7, IB8, IP2, IP4, N34, T3, TP33

A7: Steel packagings must be corrosion-resistant or have protection against corrosion.
IB8: Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2, 31HZ1 and 31HZ2); Fiberboard (11G); Wooden (11C, 11D and 11F); Flexible (13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 13L3, 13L4, 13M1 or 13M2).
IP2: When IBCs other than metal or rigid plastics IBCs are used, they must be offered for transportation in a closed freight container or a closed transport vehicle.
IP4: Flexible, fiberboard or wooden IBCs must be sift-proof and water-resistant or be fitted with a sift-proof and water-resistant liner.
N34: Aluminum construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material.
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).
TP33: The portable tank instruction assigned for this substance applies for granular and powdered solids and for solids which are filled and discharged at temperatures above their melting point which are cooled and transported as a solid mass. Solid substances transported or offered for transport above their melting point are authorized for transportation in portable tanks conforming to the provisions of portable tank instruction T4 for solid substances of packing group III or T7 for solid substances of packing group II, unless a tank with more stringent requirements for minimum shell thickness, maximum allowable working pressure, pressure-relief devices or bottom outlets are assigned in which case the more stringent tank instruction and special provisions shall apply. Filling limits must be in accordance with portable tank special provision TP3. Solids meeting the defnintion of an elevated temperature material must be transported in accordance with the applicable requirements of this subchapter.

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

Exceptions: 154
Non-bulk packaging: 212
Bulk packaging: 240

Quantity Limitations:

Passenger aircraft or railcar: 15 kg
Cargo aircraft only: 50 kg

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

DOT -- Table of Hazardous Materials and Special Provisions for UN/NA Number 2564 (49 CFR 172.101, 2005):

Hazardous materials descriptions and proper shipping name: Trichloroacetic acid, solution

Symbol(s): Not Listed
Hazard class or Division: 8

8: Corrosive material. See 49 CFR section 173.136 for definitions.

Identification Number: UN2564
Packing Group: II

II: Packing Group II - indicates the degree of danger presented by the material is medium.

Label(s) required (if not excepted): 8

8: Corrosive.

Special Provisions: A3, A6, A7, B2, IB2, N34, T7, TP2

A3: For combination packagings, if glass inner packagings (including ampoules) are used, they must be packed with absorbent material in tightly closed metal receptacles before packing in outer packagings.
A6: For combination packagings, if plastic inner packagings are used, they must be packed in tightly closed metal receptacles before packing in outer packagings.
A7: Steel packagings must be corrosion-resistant or have protection against corrosion.
B2: MC 300, MC 301, MC 302, MC 303, MC 305, and MC 306 and DOT 406 cargo tanks are not authorized.
IB2: Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1). 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 130kPa at 55 °C (1.3 bar at 131 °F) are authorized.
N34: Aluminum construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material.
T7: Minimum test pressure (bar): 4; 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)(3).
TP2: a. The maximum degree of filling must not exceed the degree of filling determined by the following: [Degree of filling = 95/1+alpha(tr - tf)], where tr is the maximum mean bulk temperature during transport, tf is the temperature in degrees celsius of the liquid during filling, and alpha is the mean coefficient of cubical expansion of the liquid between the mean temperature of the liquid during filling (tf) and the maximum mean bulk temperature during transportation (tr) both in degrees celsius; and b. For liquids transported under ambient conditions a may be calculated using the formula: [alpha = (d15-d50)/(35 x d50)], where d15 and d50 are the densities (in units of mass per unit volume) of the liquid at 15 degrees C (59 degrees F) and 50 degrees C (122 degrees F), respectively.

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

Exceptions: 154
Non-bulk packaging: 202
Bulk packaging: 242

Quantity Limitations:

Passenger aircraft or railcar: 1 L
Cargo aircraft only: 30 L

Vessel Stowage Requirements:

Vessel stowage location: B

B: (i) The material may be stowed "on deck" or "under deck" on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and (ii) "On deck only" on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.

Vessel stowage other: Not Listed

Hazardous materials descriptions and proper shipping name: Trichloroacetic acid, solution

Symbol(s): Not Listed
Hazard class or Division: 8

8: Corrosive material. See 49 CFR section 173.136 for definitions.

Identification Number: UN2564
Packing Group: III

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

Label(s) required (if not excepted): 8

8: Corrosive.

Special Provisions: A3, A6, A7, IB3, N34, T4, TP1

A3: For combination packagings, if glass inner packagings (including ampoules) are used, they must be packed with absorbent material in tightly closed metal receptacles before packing in outer packagings.
A6: For combination packagings, if plastic inner packagings are used, they must be packed in tightly closed metal receptacles before packing in outer packagings.
A7: Steel packagings must be corrosion-resistant or have protection against corrosion.
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).
N34: Aluminum construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material.
T4: 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)(3).
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: 154
Non-bulk packaging: 203
Bulk packaging: 241

Quantity Limitations:

Passenger aircraft or railcar: 5 L
Cargo aircraft only: 60 L

Vessel Stowage Requirements:

Vessel stowage location: B

B: (i) The material may be stowed "on deck" or "under deck" on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and (ii) "On deck only" on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.

Vessel stowage other: 8

8: Glass carboys not permitted on passenger vessels.

ICAO International Shipping Name for UN1839 (ICAO, 2002):

Proper Shipping Name: Trichloroacetic acid
UN Number: 1839

ICAO International Shipping Name for UN2564 (ICAO, 2002):

Proper Shipping Name: Trichloroacetic acid solution
UN Number: 2564

LABELS

NFPA

NFPA Hazard Ratings for CAS76-03-9 (NFPA, 2002):

Not Listed

-HANDLING AND STORAGE

HANDLING

Always wear rubber gloves when handling the compound (OHM/TADS , 1998).

STORAGE

CONTAINER

Keep containers tightly closed (ITI, 1995).

ROOM/CABINET RECOMMENDATIONS

Store trichloroacetic acid in a dark, cool area (ITI, 1995).
Store in a well-ventilated location (OHM/TADS , 1998). Keep away from sun, heat, and fire hazard (Sittig, 1991).

INCOMPATIBILITIES

Do not store trichloroacetic acid solutions of less than 30% in water (Budavari, 1996).

-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.

EYE/FACE PROTECTION

Prevent eye contact by wearing appropriate eye protection (NIOSH , 1998).

Wear a faceshield and splashproof goggles if a full facepiece respiratory device is not available (Sittig, 1991).

RESPIRATORY PROTECTION

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 76-03-9.

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 F

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

Tychem ThermoPro

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: Not Listed
Citation: (DuPont, 2003)

Trelleborg-Viking, Inc.

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

Rubber Laminate

Trelleborg-Viking, Inc.

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

Viton/Butyl

Trelleborg-Viking, Inc.

Super

Degradation Rating: No Degradation Rating provided
Breakthrough Time (minutes): >480
Permeation Rate (mcg/cm2/min): <0.1
Notes: liquid
Citation: (Trelleborg-Viking, Inc., 2001)

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
Trelleborg-Viking, Inc. 170 West Road Suite 1 Portsmouth, NH 03801 USA Phone: (603) 436-1236 Fax: (603) 436-1392 Toll-Free: (800) 344-4458 Website: http://www.trelleborg.com/protective/ Email: protective@trelleborg.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.
Trichloroacetic acid is not flammable (Lewis, 1993).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS76-03-9 (NFPA, 2002):

Not Listed

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 CAS76-03-9 (NFPA, 2002):

Not Listed

Use an agent appropriate for the surrounding fire, as trichloroacetic acid itself does not burn (AAR, 1996).

Apply water in flooding amounts as fog and from as far a distance as possible (AAR, 1996).

Use flooding quantities of water to cool affected containers (AAR, 1996).

EXPLOSION HAZARD

In terms of explosiveness, OHM/TADS (1998) lists the compound as "stable."

REACTIVITY HAZARD

Twenty seconds after trichloroacetic acid was added to copper wool rinsed with dimethyl sulfoxide, the flask contents were ejected and the neck was left misshapen by severe heat (Urben, 1995).

"Adding the copper wool to a solution of the acid in the solvent gave an exothermic but controlled reaction. (Formation of a reactive carbene species by dehydrohalogenation seems a remote possibility)" (Urben, 1995).

Trichloroacetic acid is incompatible with or reacts when in contact with moisture, iron, zinc, aluminum, and strong oxidizers (NIOSH , 1998).

Products of decomposition include chloroform, hydrochloric acid, carbon dioxide, and carbon monoxide (Urben, 1995).

Toxic chlorine and disodium oxide fumes are emitted when the compound is heated to decomposition (Lewis, 1996).

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.

Evacuate workers from spill area (Sittig, 1991).

AIHA ERPG Values for CAS76-03-9 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS76-03-9 (U.S. Department of Energy, Office of Emergency Management, 2010):

Listed as Trichloroacetic acid
TEEL-0 (units = ppm): 1
TEEL-1 (units = ppm): 1
TEEL-2 (units = ppm): 2
TEEL-3 (units = ppm): 25
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 CAS76-03-9 (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 CAS76-03-9 (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.

WASTE TREATMENT OPTIONS

CHEMICAL TREATMENT

Pour soda ash onto spill and then mop up with water. Shovel slurry into a container appropriate for the material (Sittig, 1991).
"Pour onto vermiculite, cover with scrap paper and wood. Spray with waste alcohol and ignite with excelsior train. Stay upwind" (OHM/TADS , 1998).
Ensure that trichloroacetic acid, solid and solution, does not enter sewers or water sources. Use crushed limestone, soda ash, or lime to neutralize spill (AAR, 1996).
Waste management activities associated with material disposition are unique to individual situations. Proper waste characterization and decisions regarding waste management should be coordinated with the appropriate local, state, or federal authorities to ensure compliance with all applicable rules and regulations.

PHYSICAL TREATMENT

"SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices" (HSDB , 1998).

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

Trichloroacetic acid may be released to the environment through waste streams as a result of the compound's production and use as an herbicide and in organic synthesis, medicine, and pharmacy (HSDB , 1998).

ENVIRONMENTAL FATE AND KINETICS

When released to the atmosphere, trichloroacetic acid exists only in the vapor phase. This is based on a vapor pressure of 0.16 mmHg at 25 degrees C (HSDB , 1998).

WATER

SURFACE WATER
- The Henry's Law constant for the compound indicates that it will not volatilize from water surfaces. Estimated half-lives are 1632 and 1.2x10(4) days for a model river and model lake, respectively (HSDB , 1998).

SOIL

TERRESTRIAL
- Trichloroacetic acid is expected to have high mobility in soil based upon a reported Koc value of 1 (HSDB , 1998).
- Based on a Henry's law constant of 2.4x10(-8) atm/m(3)/mol, volatilization from moist soil surfaces is not expected (HSDB , 1998).

OTHER

OTHER
- Due to the vapor pressure of the compound, it is expected to volatilize from dry surfaces (HSDB , 1998).

ABIOTIC DEGRADATION

A rate constant of 0.52 cm(3)/molecule-sec at 25 degrees C was estimated for the vapor-phase reaction of trichloroacetic acid with photochemically produced hydroxyl radicals. This value translates into a 31-day atmospheric half-life at an atmospheric concentration of 5x10(5) hydroxyl radicals/cm(3) (HSDB , 1998).

The compound degrades in the atmosphere upon contact with photochemically produced hydroxyl radicals. The half-life is approximately 31 days (HSDB , 1998).

BIODEGRADATION

Following a 4-week screening study using inoculated sludge, 0 to 46% of trichloroacetic acid biodegraded. A biodegradation lag period is common for trichloroacetic acid, with a slow biodegradation rate followed by a more rapid one (HSDB , 1998).

The compound can be decomposed by using various species of pseudomonas, arthrobacter, and pseudomonas dehalogens, and the fungus trichlderma viride (HSDB , 1998).

BIOACCUMULATION

FISH

Bioconcentration factors of 0.4-1.7 indicate that bioconcentration in aquatic organisms is expected to be low (HSDB , 1998).

ENVIRONMENTAL TOXICITY

FRESHWATER TOXICITY

NOAEL - CHINOOK: 870 ppm (OHM/TADS , 1998)
LD40 - (WATER) WHITE CRAPPIE: 56 ppm (OHM/TADS , 1998)
LD50 - (WATER)CATFISH: >2000 ppm for 96H (OHM/TADS , 1998)
LD - (WATER) CHANNEL CATFISH: >2000 for 24H -- Test Environ: 90% in tap (OHM/TADS , 1998)

SALTWATER TOXICITY

NOAEL - STRIPED MULLET: 1 ppm -- Test Environ: NA salt temp 28 degrees C (OHM/TADS , 1998)
NOAEL - BROWN SHRIMP: 1 ppm -- Test Environ: NA salt temp 28 degrees C (OHM/TADS , 1998)

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

163.38

DESCRIPTION/PHYSICAL STATE

Trichloroacetic acid is described as colorless or white, rhombic, deliquescent crystals possessing a slight to strong characteristic odor (Ashford, 1994; Budavari, 1996; Lewis, 1996).

Aqueous solution is very acidic. pH of 0.1 M aqueous solution equals 1.2 (Budavari, 1996)

VAPOR PRESSURE

1 mmHg (at 51 degrees C) (Lewis, 1996)

0.16 mmHg (at 25 degrees C) (HSDB , 1998)

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

1.629 (at 61 degrees C/4 degrees C) (Budavari, 1996; Lewis, 1996; ITI, 1995)

DENSITY

NORMAL TEMPERATURE AND PRESSURE

(25 degrees C; 77 degrees F and 760 mmHg)
1.62 g/cm(3) (ACGIH, 1991)

OTHER TEMPERATURE AND/OR PRESSURE

1.6126 g/cm(3) (at 64 degrees C) (HSDB , 1998)

TEMPERATURE AND/OR PRESSURE NOT LISTED

1.6298 g/cm(3) (Lewis, 1993)

FREEZING/MELTING POINT

FREEZING POINT

136 degrees F (NIOSH , 1998)
57.7 degrees C (Lewis, 1996)

MELTING POINT

58 degrees C (ACGIH, 1991; Ashford, 1994)
57.5 degrees C (Lewis, 1993)
57-58 degrees C (Budavari, 1996; Lewis, 1996)
57 degrees C (OHM/TADS , 1998)

BOILING POINT

196-197 degrees C (Budavari, 1996; ITI, 1995)

388 degrees F (NIOSH , 1998)

198 degrees C (Ashford, 1994)

197.6 degrees C (ACGIH, 1991)

196 degrees C (OHM/TADS , 1998)

195.5 degrees C (HSDB , 1998; Lewis, 1996)

FLASH POINT

None (Lewis, 1996)

EXPLOSIVE LIMITS

LOWER

Not Applicable (NIOSH , 1998)

UPPER

Not Applicable (NIOSH , 1998)

SOLUBILITY

IN WATER

Trichloroacetic acid is miscible in water (NIOSH , 1998).
The compound is soluble in water, yielding very acidic solutions (Ashford, 1994).
It is soluble in 0.1 part water (Budavari, 1996).
1306 g/100 mL (25 degrees C) (ACGIH, 1991)
HSDB (1998) lists trichloroacetic acid's solubility in water as follows (at 25 degrees C): 1000 g/100 mL; 1.2x10(6) mg/L; 1306 g/100 g

IN ORGANIC SOLVENTS

Trichloroacetic acid is very soluble in alcohol and ether (Budavari, 1996).
It is soluble in ethanol and diethyl ether (ACGIH, 1991) and is slightly soluble in carbon tetrachloride (HSDB , 1998).
HSDB (1998) lists the following specific information regarding solubility in solvents at 25 degrees C:

Acetone: 850 g/100 g
Benzene: 201 g/100 g
Ethyl Ether: 617 g/100 g
Methanol: 2143 g/100 g
o-Xylene: 110 g/100 g

OCTANOL/WATER PARTITION COEFFICIENT

1.33 (HSDB , 1998)

HENRY'S CONSTANT

2.4x10(-8) atm-m(3)/mol (estimated) (HSDB , 1998)

SPECTRAL CONSTANTS

2376 (Coblentz Society Spectral Collection) (HSDB , 1998)

1-6 (Organic Electronic Spectral Data, Philips et al, John Wiley & Sons, New York) (HSDB , 1998)

MASS

1026 (Atlas of Mass Spectral Data, John Wiley & Sons, New York) (HSDB , 1998)

OTHER/PHYSICAL

SURFACE TENSION

27.8 dynes/cm (at 80.2 degrees C) (HSDB , 1998)

DISSOCIATION CONSTANT

K=2x10(-1); pKa=0.70 (at 25 degrees C) (HSDB , 1998)

HEAT OF COMBUSTION

3.05 kJ/g (HSDB , 1998)

INDEX OF REFRACTION

1.4603 (at 61 degrees C) (HSDB , 1998)

NUCLEAR MAGNETIC RESONANCE

6 (Sadtler Research Laboratories Spectral Collection) (HSDB , 1998)

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Information to evaluate chemical incidents