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Registry of Toxic Effects of Chemical Substances (RTECS)

Tungsten carbide, mixed with cobalt (92%:8%)

RTECS #

YO7525000

CAS #

12718-69-3

Updated

September 201

Molecular Weight

N/R

Molecular Formula

N/R

Synonyms

BK8

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
intratracheal/rat lowest published lethal dose: 75 mg/kgNTIS** AEC-TR-6710

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 0.02 mg(Co)/m3DTLVS* TLV/BEI,2013
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
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-Confirmed animal carcinogenDTLVS* TLV/BEI,2013

Standards and Regulations

OrganizationStandardReference
Occupational Exposure Limit-BELGIUMtime-weighted average 5 mg(W)/m3, short term exposure limit 10 mg(W)/m3, MAR2002
Occupational Exposure Limit-HUNGARYtime-weighted average 0.1 mg(Co)/m3, short term exposure limit 0.4 mg(Co)/m3, SEP2000
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 1 mg(W)/m3, JAN2002
Occupational Exposure Limit-SWITZERLANDMAK-week 5 mg(W)/m3, inhal, JAN2011
Occupational Exposure Limit-UNITED KINGDOMtime-weighted average 0.1 mg(Co)/m3, sen, OCT2007
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

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