Tungsten carbide, mixed with cobalt and titanium (78%:14%:8%)

Acute Toxicity Data and References

Route/Organism	Dose	Effect	Reference
intratracheal/rat	lowest published lethal dose: 75 mg/kg		NTIS** AEC-TR-6710

Reviews

Organization	Standard	Reference
American Conference of Governmental Industrial Hygienists (ACGIH)	Threshold Limit Value-time-weighted average 0.02 mg(Co)/m3	DTLVS* 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)/m3	DTLVS* TLV/BEI,2013
American Conference of Governmental Industrial Hygienists (ACGIH)	Threshold Limit Value-Confirmed animal carcinogen	DTLVS* TLV/BEI,2013

Standards and Regulations

Organization	Standard	Reference
Occupational Exposure Limit-BELGIUM	time-weighted average 5 mg(W)/m3, short term exposure limit 10 mg(W)/m3, MAR2002
Occupational Exposure Limit-HUNGARY	time-weighted average 0.1 mg(Co)/m3, short term exposure limit 0.4 mg(Co)/m3, SEP2000
Occupational Exposure Limit-NEW ZEALAND	time-weighted average 1 mg(W)/m3, JAN2002
Occupational Exposure Limit-SWITZERLAND	MAK-week 5 mg(W)/m3, inhal, JAN2011
Occupational Exposure Limit-UNITED KINGDOM	time-weighted average 0.1 mg(Co)/m3, sen, OCT2007
Occupational Exposure Limit-UNITED KINGDOM	time-weighted average 5 mg(W)/m3;short term exposure limit 10 mg(W)/m3, OCT2007

NIOSH Documentation and Surveillance

Organization	Standard	Reference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CEMENTED TUNGSTEN CARBIDE-air	10H time-weighted average 0.1 mg(Co)/m3	NIOSH* DHHS #92-100,1992