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Registry of Toxic Effects of Chemical Substances (RTECS)

Tungsten carbide

RTECS #

YO7250000

CAS #

12070-12-1

Updated

September 201

Molecular Weight

195.86

Molecular Formula

CW

Synonyms

NCI C61198
Tungsten monocarbide

Mutation Data and Reference

System TestRoute/Organism/TissueDoseReference
DNA Damageleukocyte/human10 mg/LMUREAV 392,31,1997
micronucleus testleukocyte/human50 mg/LMUREAV 392,31,1997
other mutation test systemsleukocyte/human6 mg/L/24HTXAPA9 227,299,2008

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
intratracheal/rat lowest published toxic dose: 200 mg/kgLung, Thorax, or Respiration: Fibrosis, focal (pneumoconiosis)HBTME* -,871,2007

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 5 mg(week)/m3;short term exposure limit 10 mg(week)/m3DTLVS* TLV/BEI,2013
TOXICOLOGY REVIEWMUTAEX 15,431,2000
TOXICOLOGY REVIEWHBTME* ,871,2007

Standards and Regulations

OrganizationStandardReference
Mine Safety and Health Administration (MSHA) STANDARD-airtime-weighted average 5 mg(W)/m3DTLVS* 3,272,1971
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIAtime-weighted average 5 mg(W)/m3, short term exposure limit 10 mg(W)/m3, JUL2008
Occupational Exposure Limit-BELGIUMtime-weighted average 5 mg(W)/m3, short term exposure limit 10 mg(W)/m3, MAR2002
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 1 mg(W)/m3, JAN2002
Occupational Exposure Limit-NORWAYtime-weighted average 5 mg(W)/m3, JAN1999
Occupational Exposure Limit-POLANDMAC(time-weighted average) 5 mg(W)/m3, JAN1999
Occupational Exposure Limit-RUSSIAtime-weighted average 6 mg/m3, JUN2003
Occupational Exposure Limit-SWEDENtime-weighted average 5 mg(W)/m3, JUN2005
Occupational Exposure Limit-SWITZERLANDMAK-week 5 mg(W)/m3, inhal, JAN2011
Occupational Exposure Limit-THE PHILIPPINEStime-weighted average 1 mg(W)/m3, JAN1993
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 5 mg(W)/m3;short term exposure limit 10 mg(W)/m3, OCT2007

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CEMENTED TUNGSTEN CARBIDE-air10H time-weighted average 0.1 mg(Co)/m3NIOSH* DHHS #92-100,1992
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CEMENTED TUNGSTEN CARBIDE-air10H time-weighted average 0.015 mg/m3NIOSH* DHHS #92-100,1992
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO TUNGSTEN, insoluble-airtime-weighted average 5 mg(W)/m3;short term exposure limit 10 mg/m3NIOSH* DHHS #92-100,1992
National Occupational Exposure Survey 1983Hazard Code X2977; Number of Industries 4; Total Number of Facilities 158; Number of Occupations 7; Total Number of Employees Exposed 3395; Total Number of Female Employees Exposed 297

Status in Federal Agencies

OrganizationReference
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
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