tungsten

MOLECULAR FORMULA :

O4-W.2Na

MOLECULAR WEIGHT :

293.83

WISWESSER LINE NOTATION :

NA2 WO-O4

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 :

1190 mg/kg

TOXIC EFFECTS :

Behavioral - excitement Behavioral - muscle weakness

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

240 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

240 mg/kg

TOXIC EFFECTS :

Autonomic Nervous System - other (direct) parasympathomimetic Behavioral - excitement Behavioral - muscle weakness

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

140 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Mammal - cat

DOSE/DURATION :

139 mg/kg

TOXIC EFFECTS :

Vascular - BP lowering not characterized in autonomic section Lungs, Thorax, or Respiration - respiratory depression

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

875 mg/kg

TOXIC EFFECTS :

Behavioral - excitement Behavioral - muscle weakness

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

78 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intramuscular

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

105 mg/kg

TOXIC EFFECTS :

Behavioral - convulsions or effect on seizure threshold Behavioral - food intake (animal) Gastrointestinal - hypermotility, diarrhea

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

1152 mg/kg

TOXIC EFFECTS :

Behavioral - excitement Behavioral - muscle weakness

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

810 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

106 mg/kg/30W-I

TOXIC EFFECTS :

Behavioral - alteration of classical conditioning

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

504 ug/m3/24H/17W-C

TOXIC EFFECTS :

Blood - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase Biochemical - Metabolism (Intermediary) - other proteins

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

1214 mg/kg/35W-I

TOXIC EFFECTS :

Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

504 ug/m3/24H

SEX/DURATION :

male 17 week(s) pre-mating

TOXIC EFFECTS :

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

MUTATION DATA

TYPE OF TEST :

Sex chromosome loss and nondisjunction

TEST SYSTEM :

Yeast - Saccharomyces cerevisiae

REFERENCE :

MUTAEX Mutagenesis. (Oxford Univ. Press, Pinkhill House, Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 1986- Volume(issue)/page/year: 1,21,1986 *** REVIEWS *** ACGIH TLV-TWA 5 mg(W)/m3; STEL 10 mg(W)/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 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 5 mg(W)/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: 3,272,1971 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL-DENMARK:TWA 5 mg(W)/m3 JAN 1993 OEL-FINLAND:TWA 5 mg(W)/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg(W)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 1 mg(W)/m3 JAN 1993 OEL-SWEDEN:TWA 5 mg(W)/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg(W)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg(W)/m3;STEL 10 mg(W)/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 TUNGSTEN, soluble-air:10H TWA 1 mg(W)/m3;STEL 3 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 : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 84829 No. of Facilities: 895 (estimated) No. of Industries: 13 No. of Occupations: 20 No. of Employees: 15470 (estimated) No. of Female Employees: 8875 (estimated)