7440-48-4

MOLECULAR FORMULA :

Co

MOLECULAR WEIGHT :

58.93

WISWESSER LINE NOTATION :

CO

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

6171 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity) Behavioral - ataxia Gastrointestinal - hypermotility, diarrhea

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

100 mg/kg

TOXIC EFFECTS :

Vascular - regional or general arteriolar or venous dilation Liver - other changes Blood - other changes

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

100 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intratracheal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

25 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

100 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

750 mg/kg

TOXIC EFFECTS :

Behavioral - somnolence (general depressed activity)

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

100 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

200 mg/m3/17W-I

TOXIC EFFECTS :

Vascular - regional or general arteriolar or venous dilation Lungs, Thorax, or Respiration - other changes Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - pig

DOSE/DURATION :

100 ug/m3/6H/13W-I

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - changes in pulmonary vascular resistance Lungs, Thorax, or Respiration - other changes

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intramuscular

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

126 mg/kg

TOXIC EFFECTS :

Tumorigenic - neoplastic by RTECS criteria Gastrointestinal - tumors Tumorigenic - tumors at site of application

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Implant

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

75 mg/kg

TOXIC EFFECTS :

Tumorigenic - equivocal tumorigenic agent by RTECS criteria Musculoskeletal - tumors

TYPE OF TEST :

TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :

Intramuscular

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

126 mg/kg

TOXIC EFFECTS :

Tumorigenic - neoplastic by RTECS criteria Tumorigenic - tumors at site of application

MUTATION DATA

TYPE OF TEST :

DNA damage

TEST SYSTEM :

Human Leukocyte

REFERENCE :

MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 392,31,1997 *** REVIEWS *** ACGIH TLV-Animal 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-TWA 0.02 mg(Co)/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: TLV/BEI,1997 IARC Cancer Review:Animal Sufficient 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: 52,363,1991 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: 52,363,1991 IARC Cancer Review:Group 2B 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: 52,363,1991 TOXICOLOGY REVIEW TRBMAV Texas Reports on Biology and Medicine. (Galveston, TX) V.1-41(2), 1943-81/82. Discontinued. Volume(issue)/page/year: 33,85,1975 TOXICOLOGY REVIEW AEMBAP Advances in Experimental Medicine and Biology. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) V.1- 1967- Volume(issue)/page/year: 40,239,1973 TOXICOLOGY REVIEW ADTEAS Advances in Teratology. (New York, NY) V.1-5, 1966-72. Discontinued. Volume(issue)/page/year: 5,51,1972 TOXICOLOGY REVIEW KOTTAM Kogai to Taisaku. Journal of Environmental Pollution Control. (Kogai Taisaku Gijutsu Dokokai, Shuwa-Akasaka Bldg., 9-1-244, Akasaka, Minato-ku, Tokyo 107, Japan) V.1- 1965- Volume(issue)/page/year: 11,1300,1975 TOXICOLOGY REVIEW FOREAE Food Research. (Champaign, IL) V.1-25, 1936-60. For publisher information, see JFDSAZ. Volume(issue)/page/year: 7,313,1942 TOXICOLOGY REVIEW MIBUBI Mikrobiyoloji Bulteni. Bulletin of Microbiology. (c/o Dr. A. Tevfik Cenqiz, Ankara Universitesi Tip Fakultesi Mikrobiyoloji Ana Bilim Dah, Ankara, Turkey) V.1- 1967- Volume(issue)/page/year: 9,321,1975 TOXICOLOGY REVIEW FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 9,105,1971 TOXICOLOGY REVIEW 85CVA2 "Oncology 1970, Proceedings of the Tenth International Cancer Congress," Chicago, Year Book Medical Pub., 1971 Volume(issue)/page/year: 5,63,1970 TOXICOLOGY REVIEW PEXTAR Progress in Experimental Tumor Research. (S. Karger AG, Postfach CH-4009 Basel, Switzerland) V.1- 1960- Volume(issue)/page/year: 12,102,1969 TOXICOLOGY REVIEW GSAMAQ Memoir--Geological Society of America. (POB 9140, Boulder, CO 80302) No.1- 1934- Volume(issue)/page/year: 123,109,1971 TOXICOLOGY REVIEW AMTODM Advances in Modern Toxicology. (John Wiley & Sons, Inc., 605 Third Ave., New York, NY 10016) V.1, 1976-79. Discontinued. Volume(issue)/page/year: 3,209,1977 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 0.1 mg/m3 (dust and fume) 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: 3,59,1971 OSHA PEL (Gen Indu):8H TWA 0.1 mg(Co)/m3 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 0.1 mg(Co)/m3 (metal,fume,dust) 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 0.1 mg(Co)/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):8H TWA 0.1 mg/m3, fume and dust 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 0.1 mg/m3 JAN 1993 OEL-AUSTRALIA:TWA 0.05 mg/m3 JAN 1993 OEL-BELGIUM:TWA 0.05 mg/m3 JAN 1993 OEL-DENMARK:TWA 0.05 mg/m3 JAN 1993 OEL-FINLAND:TWA 0.05 mg/m3;Skin JAN 1993 OEL-GERMANY;Carcinogen JAN 1993 OEL-HUNGARY:TWA 0.1 mg/m3;STEL 0.2 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 0.1 mg/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 0.1 mg/m3 JAN 1993 OEL-POLAND:TWA 0.05 mg/m3 JAN 1993 OEL-RUSSIA:STEL 0.5 mg/m3 JAN 1993 OEL-SWEDEN:TWA 0.05 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 0.1 mg/m3;Carcinogen JAN 1993 OEL-UNITED KINGDOM:TWA 0.1 mg/m3 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 COBALT METAL, dust and fume-air:10H TWA 0.05 mg/m3 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 - 19770 No. of Facilities: 1331 (estimated) No. of Industries: 27 No. of Occupations: 27 No. of Employees: 8513 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X5978 No. of Facilities: 151 (estimated) No. of Industries: 8 No. of Occupations: 7 No. of Employees: 1326 (estimated) No. of Female Employees: 128 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 19770 No. of Facilities: 3263 (estimated) No. of Industries: 57 No. of Occupations: 86 No. of Employees: 78694 (estimated) No. of Female Employees: 2650 (estimated)