Chloromethane

MOLECULAR FORMULA :

C-H3-Cl

MOLECULAR WEIGHT :

50.49

WISWESSER LINE NOTATION :

G1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Human

DOSE/DURATION :

20000 ppm/2H

TOXIC EFFECTS :

Sense Organs and Special Senses (Eye) - effect, not otherwise specified Behavioral - convulsions or effect on seizure threshold Gastrointestinal - nausea or vomiting

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

1800 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

5300 mg/m3/4H

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

2200 ppm/6H

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

14661 ppm/6H

TOXIC EFFECTS :

Vascular - BP lowering not characterized in autonomic section Lungs, Thorax, or Respiration - respiratory depression Nutritional and Gross Metabolic - body temperature increase

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - cat

DOSE/DURATION :

129 mg/m3/4H

TOXIC EFFECTS :

Behavioral - general anesthetic Lungs, Thorax, or Respiration - respiratory depression

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

20000 ppm/2H

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

3000 ppm/6H/5D-I

TOXIC EFFECTS :

Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - changes in testicular weight

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

41 mg/m3/4H/26W-I

TOXIC EFFECTS :

Liver - liver function tests impaired Blood - changes in erythrocyte (RBC) count Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

150 ppm/22H/11D-C

TOXIC EFFECTS :

Behavioral - changes in motor activity (specific assay) Endocrine - changes in thymus weight Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

500 ppm/24H/3D-C

TOXIC EFFECTS :

Brain and Coverings - other degenerative changes Behavioral - tremor Behavioral - ataxia

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

2000 ppm/6H

SEX/DURATION :

male 5 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

1500 ppm/6H

SEX/DURATION :

male 50 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Paternal Effects - testes, epididymis, sperm duct

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

1500 ppm/6H

SEX/DURATION :

female 7-19 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

3000 ppm/6H

SEX/DURATION :

male 5 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Paternal Effects - testes, epididymis, sperm duct Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

3000 ppm/6H

SEX/DURATION :

male 5 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Fertility - male fertility index (e.g. # males impregnating females per # males exposed to fertile nonpregnant females)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

500 ppm/6H

SEX/DURATION :

female 6-17 day(s) after conception

TOXIC EFFECTS :

Reproductive - Specific Developmental Abnormalities - cardiovascular (circulatory) system

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

750 ppm/6H

SEX/DURATION :

female 6-17 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetal death

TYPE OF TEST :

Dominant lethal test

MUTATION DATA

TYPE OF TEST :

Morphological transformation

TEST SYSTEM :

Rodent - hamster Embryo

REFERENCE :

EVSRBT Environmental Science Research. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) V.1- 1972- Volume(issue)/page/year: 25,75,1982 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-STEL 207 mg/m3 (100 ppm) (skin) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-TWA 103 mg/m3 (50 ppm) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 41,161,1986 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 41,161,1986 IARC Cancer Review:Group 3 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,246,1987 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD:air-CL 100 ppm (210 mg/m3) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,160,1971 OSHA PEL (Gen Indu):8H TWA 100 ppm;CL 200;Pk 300/5M/3H CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 100 ppm (210 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 100 ppm (210 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):CL 100 ppm (210 mg/m3) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 50 ppm (105 mg/m3) JAN 1993 OEL-AUSTRALIA:TWA 50 ppm (105 mg/m3);STEL 100 ppm (205 mg/m3) JAN 1993 OEL-AUSTRIA:TWA 50 ppm (105 mg/m3) JAN 1993 OEL-BELGIUM:TWA 50 ppm (103 mg/m3);STEL 100 ppm (207 mg/m3) JAN 1993 OEL-DENMARK:TWA 50 ppm (105 mg/m3) JAN 1993 OEL-FINLAND:TWA 50 ppm (105 mg/m3);STEL 75 ppm (160 mg/m3) JAN 1993 OEL-FRANCE:TWA 50 ppm (105 mg/m3);STEL 100 ppm (210 mg/m3) JAN 1993 OEL-GERMANY:TWA 50 ppm (105 mg/m3);Carcinogen JAN 1993 OEL-HUNGARY:TWA 20 mg/m3;STEL 40 mg/m3 JAN 1993 OEL-JAPAN:TWA 50 ppm (100 mg/m3) JAN 1993 OEL-THE NETHERLANDS:TWA 50 ppm (105 mg/m3) JAN 1993 OEL-THE PHILIPPINES:TWA 100 ppm (210 mg/m3) JAN 1993 OEL-POLAND:TWA 20 mg/m3 JAN 1993 OEL-RUSSIA:TWA 50 ppm;STEL 5 mg/m3 JAN 1993 OEL-SWEDEN:TWA 50 ppm (100 mg/m3);STEL 100 ppm (200 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 50 ppm (105 mg/m3);STEL 100 ppm (210 mg/m3) JAN 1993 OEL-THAILAND:TWA 100 mg/m3;STEL 200 mg/m3 JAN 1993 OEL-TURKEY:TWA 100 ppm (210 mg/m3) JAN 1993 OEL-UNITED KINGDOM:TWA 50 ppm (105 mg/m3);STEL 100 ppm JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO METHYL CHLORIDE-air:CA lowest feasible concentration REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M0421 No. of Facilities: 1937 (estimated) No. of Industries: 32 No. of Occupations: 29 No. of Employees: 8804 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M0421 No. of Facilities: 596 (estimated) No. of Industries: 18 No. of Occupations: 38 No. of Employees: 10003 (estimated) No. of Female Employees: 571 (estimated)