1,3-DICHLORO-5,5-DIMETHYLHYDANTOIN

Editor's Note: This material is not listed in the Emergency Response Guidebook. Based on the material's physical and chemical properties, toxicity, or chemical group, a guide has been assigned. For additional technical information, contact one of the emergency response telephone numbers listed under Public Safety Measures.

MOLECULAR FORMULA

C5-H6-CL2-N2-O2

ERG GUIDE NUMBER

134-FLAMMABLE SOLIDS - TOXIC and/or CORROSIVE

SYNONYM REFERENCE

((HSDB, 1996); Lewis, 1992; NIOSH , 1996; RTECS , 1996)

USES/FORMS/SOURCES

USES

1,3-Dichloro-5,5-dimethylhydantoin is used as a disinfectant, industrial deodorant, and chlorinating agent. It is the active ingredient of powder laundry bleaches and can be added to water to keep cut flowers fresh ((HSDB, 1996)).
It also is used in insecticides, as an intermediate for amino acids and drugs, as a polymerization catalyst, and as a stabilizer for vinyl chloride polymers (Hathaway, 1991; ((HSDB, 1996)).

-CLINICAL EFFECTS

GENERAL CLINICAL EFFECTS

1,3-Dichloro-5,5-dimethylhydantoin is a mild to moderate irritant of the eyes, respiratory tract, and mucous membranes. It may be a severe skin irritant.

Central nervous system depression has occurred with exposure to some of the hydantoins.

POTENTIAL HEALTH HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)

TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death.
Fire will produce irritating, corrosive and/or toxic gases.
Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

-MEDICAL TREATMENT

LIFE SUPPORT

Support respiratory and cardiovascular function.

SUMMARY

FIRST AID - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (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

If exposure occurs, follow these first aid measures (National Institute for Occupational Safety and Health, 2007):

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 - Promptly wash the contaminated skin with soap and water. If this chemical penetrates the clothing, promptly remove the clothing and wash the skin with soap and water. Get medical attention promptly.
INHALATION EXPOSURE - Move the exposed person to fresh air at once. If breathing has stopped, perform artificial 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 and respiratory system.

GENERAL

Move victims of inhalation exposure from the toxic environment and administer 100% humidified supplemental oxygen with assisted ventilation as required. Exposed skin and eyes should be copiously flushed with water. Because of the potential for rapid onset of CNS depression or seizures with possible aspiration of gastric contents, EMESIS SHOULD NOT BE INDUCED. Cautious gastric lavage followed by administration of activated charcoal may be of benefit if the patient is seen soon after the exposure.

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.

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).
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

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 EXPOSURE

Because of the potential for gastrointestinal tract irritation or CNS depression, do not induce emesis.
Significant esophageal or gastrointestinal tract irritation or burns may occur following ingestion. The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation.
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.
Observe patients with ingestion carefully for the possible development of esophageal or gastrointestinal tract irritation or burns. If signs or symptoms of esophageal irritation or burns are present, consider endoscopy to determine the extent of injury.

-RANGE OF TOXICITY

MINIMUM LETHAL EXPOSURE

GENERAL/SUMMARY

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

ANIMAL DATA

500 mg/kg/day of 1,3-dichloro-5,5-dimethylhydantoin was given to 50 pregnant CD-1 mice on days 6 through 13 of gestation, resulting in 18% maternal deaths. Toxic effects in the offspring were not evident ((HSDB, 1996)).
1,3-Dichloro-5,5-dimethylhydantoin given to Canton-S wild-type male Drosophila melanogaster at a dose of 250 ppm resulted in a 30 percent mortality rate ((HSDB, 1996)).

MAXIMUM TOLERATED EXPOSURE

CASE REPORTS

OCCUPATIONAL

Workmen experienced marked respiratory irritation after exposure to an average concentration of 1.97 mg/m(3) of the compound. The exposure range was 0.7 to 3.4 mg/m(3) (Hathaway, 1991; ((HSDB, 1996)).

Carcinogenicity Ratings for CAS118-52-5 :

ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed ; Listed as: 1,3-Dichloro-5,5-dimethyl hydantoin
ACGIH (American Conference of Governmental Industrial Hygienists, 2010): Not Listed ; Listed as: 1,3-Dichloro-5,5-dimethyl hydantoin
EPA (U.S. Environmental Protection Agency, 2011): Not Listed
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: 1,3-Dichloro-5,5-dimethylhydantoin
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 CAS118-52-5 (U.S. Environmental Protection Agency, 2011):

Not Listed

TOXICITY VALUES

References: RTECS, 1996
- LCLo- (INHALATION)RAT:
- LD50- (ORAL)GUINEA_PIG:
- LD50- (ORAL)RABBIT:
- LD50- (SKIN)RABBIT:
- LD50- (ORAL)RAT:

-STANDARDS AND LABELS

WORKPLACE STANDARDS

ACGIH TLV Values for CAS118-52-5 (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

1,3-Dichloro-5,5-dimethyl hydantoin

TLV:

TLV-TWA: 0.2 mg/m(3)
TLV-STEL: 0.4 mg/m(3)
TLV-Ceiling:

Notations and Endnotes:

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

TLV Basis - Critical Effect(s): URT irr
Molecular Weight: 197.03

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

Under Study

1,3-Dichloro-5,5-dimethyl hydantoin

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

AIHA WEEL Values for CAS118-52-5 (AIHA, 2006):

Not Listed

NIOSH REL and IDLH Values for CAS118-52-5 (National Institute for Occupational Safety and Health, 2007):

Listed as: 1,3-Dichloro-5,5-dimethylhydantoin
REL:

TWA: 0.2 mg/m(3)
STEL: 0.4 mg/m(3)
Ceiling:
Carcinogen Listing: (Not Listed) Not Listed
Skin Designation: Not Listed
Note(s):

IDLH:

IDLH: 5 mg/m3
Note(s): Not Listed

OSHA PEL Values for CAS118-52-5 (U.S. Occupational Safety, and Health Administration (OSHA), 2010):

Listed as: 1,3-Dichloro-5,5-dimethyl hydantoin
Table Z-1 for 1,3-Dichloro-5,5-dimethyl hydantoin:

8-hour TWA:

ppm:

Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees C and 760 torr.

mg/m3: 0.2

Milligrams of substances per cubic meter of air. When entry is in this column only, the value is exact; when listed with a ppm entry, it is approximate.

Ceiling Value:
Skin Designation: No
Notation(s): Not Listed

OSHA List of Highly Hazardous Chemicals, Toxics, and Reactives for CAS118-52-5 (U.S. Occupational Safety and Health Administration, 2010):

Not Listed

ENVIRONMENTAL STANDARDS

EPA CERCLA, Hazardous Substances and Reportable Quantities for CAS118-52-5 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA CERCLA, Hazardous Substances and Reportable Quantities, Radionuclides for CAS118-52-5 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA RCRA Hazardous Waste Number for CAS118-52-5 (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 CAS118-52-5 (U.S. Environmental Protection Agency, 2010):

Not Listed

EPA SARA Title III, Community Right-to-Know for CAS118-52-5 (40 CFR 372.65, 2006; 40 CFR 372.28, 2006):

Not Listed

DOT List of Marine Pollutants for CAS118-52-5 (49 CFR 172.101 - App. B, 2005):

Not Listed

EPA TSCA Inventory for CAS118-52-5 (EPA, 2005):

Listed as: 2,4-Imidazolidinedione, 1,3-dichloro-5,5-dimethyl-

SHIPPING REGULATIONS

SURFACE

DOT -- Table of Hazardous Materials and Special Provisions (49 CFR 172.101, 2005):

Not Listed

ICAO International Shipping Name (ICAO, 2002):

Not Listed

LABELS

NFPA

NFPA Hazard Ratings for CAS118-52-5 (NFPA, 2002):

Not Listed

-HANDLING AND STORAGE

SUMMARY

INDUSTRIAL CHEMICALS

The compound can be stored without significant loss of chlorine. At 60 degrees C after 14 weeks, chlorine loss was 1.5% (Budavari, 1989).

HANDLING

When handling, wear protective clothing, including butyl rubber gloves, self-contained breathing apparatus, eye protection, and protective shoes (ITI, 1988; NIOSH , 1996).

STORAGE

INCOMPATIBILITIES

1,3,-Dichloro-5,5-dimethylhydantoin is incompatible with water, strong acids, and materials that are easily oxidized, such as ammonia salts and sulfides (NIOSH , 1996).
This compound is incompatible with xylene (Lewis, 1992).

-PERSONAL PROTECTION

SUMMARY

RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (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 in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.

Wear protective clothing, including butyl rubber gloves, self-contained breathing apparatus, eye protection, and protective shoes (ITI, 1988; NIOSH , 1996).

Wash skin immediately after it comes into contact with 1,3-dichloro-5,5-dimethylhydantoin (NIOSH , 1996).

Immediately change out of clothing that has become wet or contaminated (NIOSH , 1996).

EYE/FACE PROTECTION

In addition to the recommendation to wear eye protection, eyewash fountains should be available to workers in areas where exposures may occur (NIOSH , 1996).

Do not wear contact lenses when working with 1,3-dichloro-5,5-dimethylhydantoin (NIOSH , 1996).

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 118-52-5.

Specific recommendations and test data for this chemical were not found in the available manufacturers' product literature. A complete list of consulted manufacturers and references is presented below.

-PHYSICAL HAZARDS

FIRE HAZARD

SUMMARY

Editor's Note: This material is not listed in the Emergency Response Guidebook. Based on the material's physical and chemical properties, toxicity, or chemical group, a guide has been assigned. For additional technical information, contact one of the emergency response telephone numbers listed under Public Safety Measures.
POTENTIAL FIRE OR EXPLOSION HAZARDS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)
- Flammable/combustible material.
- May be ignited by heat, sparks or flames.
- When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards.
- Contact with metals may evolve flammable hydrogen gas.
- Containers may explode when heated.
1,3-Dichloro-5,5-dimethylhydantoin is flammable (ITI, 1988)
Chlorine gas evolves when the compound is heated to higher than 210 degrees C (ITI, 1988).
Toxic fumes of chlorine and NOx are released when 1,3-dichloro-5,5-dimethylhydantoin is heated to decomposition (Lewis, 1992).

FLAMMABILITY CLASSIFICATION

NFPA Flammability Rating for CAS118-52-5 (NFPA, 2002):

Not Listed

FIRE CONTROL/EXTINGUISHING AGENTS

SMALL FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)

Dry chemical, CO2, water spray or alcohol-resistant foam.

LARGE FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)

Water spray, fog or alcohol-resistant foam.
Move containers from fire area if you can do it without risk.
Use water spray or fog; do not use straight streams.
Do not get water inside containers.
Dike fire control water for later disposal; do not scatter the material.

TANK OR CAR/TRAILER LOAD FIRE PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)

Fight fire from maximum distance or use unmanned hose holders or monitor nozzles.
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 CAS118-52-5 (NFPA, 2002):

Not Listed

COMBUSTION TOXICITY

1,3-Dichloro-5,5-dimethylhydantoin releases toxic chlorine and NOx fumes when heated to decomposition (Lewis, 1992).
Chlorine gas evolves when the compound is heated to higher than 210 degrees C (ITI, 1988).

EXPLOSION HAZARD

Using the compound to chlorinate xylene will result in a violent explosion (Bretherick, 1990; Lewis, 1992).

DUST/VAPOR HAZARD

Chlorine gas is evolved when 1,3-dichloro-5,5-dimethylhydantoin is heated to higher than 210 degrees C (ITI, 1988).

Hypochlorous acid is released when the compound comes into contact with water, especially hot water (Budavari, 1989).

Toxic and corrosive fumes are released when 1,3-dichloro-5,5-dimethylhydantoin reacts with water or steam (Lewis, 1992).

Chlorine and NOx fumes are produced when the chemical is heated to decomposition (Lewis, 1992).

REACTIVITY HAZARD

Chlorine gas is evolved when 1,3-dichloro-5,5-dimethylhydantoin is heated to higher than 210 degrees C (ITI, 1988).

Hypochlorous acid is released when the compound comes into contact with water, especially hot water (Budavari, 1989).

Toxic and corrosive fumes are released when 1,3-dichloro-5,5-dimethylhydantoin reacts with water or steam (Lewis, 1992).

Chlorine and NOx fumes are produced when the chemical is heated to decomposition (Lewis, 1992).

EVACUATION PROCEDURES

SUMMARY

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

LARGE SPILL - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)

Consider initial downwind evacuation for at least 100 meters (330 feet).

FIRE - PUBLIC SAFETY EVACUATION DISTANCES - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (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 134 (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 for at least 25 meters (75 feet) in all directions.
Stay upwind.
Keep unauthorized personnel away.
Keep out of low areas.
Ventilate enclosed areas.

AIHA ERPG Values for CAS118-52-5 (AIHA, 2006):

Not Listed

DOE TEEL Values for CAS118-52-5 (U.S. Department of Energy, Office of Emergency Management, 2010):

Not Listed

AEGL Values for CAS118-52-5 (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 CAS118-52-5 (National Institute for Occupational Safety and Health, 2007):

IDLH: 5 mg/m3
Note(s): Not Listed

CONTAINMENT/WASTE TREATMENT OPTIONS

SUMMARY

SPILL OR LEAK PRECAUTIONS - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (ERG, 2004)
- Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire.
- ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area).
- Stop leak if you can do it without risk.
- Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
- Prevent entry into waterways, sewers, basements or confined areas.
- Use clean non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal.
RECOMMENDED PROTECTIVE CLOTHING - EMERGENCY RESPONSE GUIDEBOOK, GUIDE 134 (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 in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.
Use paper towels to absorb 1,3-dichloro-5,5-dimethylhydantoin spills. To evaporate the spill, place the towels in a hood. Dispose of the towels by burning them (ITI, 1988).

WASTE TREATMENT OPTIONS

CHEMICAL TREATMENT

Dissolve the material in a combustible solvent. Then spray the solution into a furnace that has an alkali scrubber and afterburner (ITI, 1988).
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.

-ENVIRONMENTAL HAZARD MANAGEMENT

POLLUTION HAZARD

No information found at the time of this review.

ABIOTIC DEGRADATION

No information found at the time of this review.

ENVIRONMENTAL TOXICITY

No information found at the time of this review.

-PHYSICAL/CHEMICAL PROPERTIES

MOLECULAR WEIGHT

197.03 (Budavari, 1989)

DESCRIPTION/PHYSICAL STATE

1,3-Dichloro-5,5-dimethylhydantoin is a white powder composed of pointed, four-sided prisms (Budavari, 1989; Lewis, 1992).

It contains approximately 36% active chlorine (Lewis, 1992).

The chemical is made by passing chlorine through an aqueous solution of 5,5-dimethylhydantoin (Budavari, 1989).

4.4 (for an aqueous solution) (Budavari, 1989)

It decomposes completely at pH 9 ((HSDB, 1996)).

VAPOR PRESSURE

Unknown (NIOSH , 1996)

SPECIFIC GRAVITY

OTHER TEMPERATURE AND/OR PRESSURE

1.5 g/cm(3) (at 20/20 degrees C) (Budavari, 1989; NIOSH , 1996)

FREEZING/MELTING POINT

MELTING POINT

132 degrees C (Budavari, 1989)
sublimes (at 100 degrees C) (Lewis, 1992)

BOILING POINT

Unknown (NIOSH , 1996)

FLASH POINT

346 degrees F (NIOSH , 1996)

EXPLOSIVE LIMITS

LOWER

Unknown (NIOSH , 1996)

UPPER

Unknown (NIOSH , 1996)

SOLUBILITY

IN WATER

0.21% (at 25 degrees C) (Budavari, 1989)
0.60% (at 60 degrees C) (Budavari, 1989)

IN ORGANIC SOLVENTS

At 25 degrees C, 1,3-dichloro-5,5-dimethylhydantoin is freely soluble in chlorinated and highly polar substances, including the following (Budavari, 1989):

Benzene: 9.2%
Carbon tetrachloride12.5%
Chloroform: 14%
Ethylene dichloride: 32%
Methylene chloride: 30%
sym-Tetrachlorethane: 17%

The compound is soluble in dichloroethylene and alcohol (ITI, 1988).

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1,3-DICHLORO-5,5-DIMETHYLHYDANTOIN

Classification | Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents

Information to evaluate chemical incidents