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TUNGSTEN CARBIDE ICSC: 1320
Date of Peer Review: November 1998

CAS # 12070-12-1 WC
RTECS # YO7250000 Molecular mass: 195.9
UN #
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough.
Avoid inhalation of fine dust and mist. Local exhaust or breathing protection.

Skin Dry skin.
Protective gloves.
Rinse skin with plenty of water or shower.
Eyes
Safety spectacles or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion
Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Personal protection: P2 filter respirator for harmful particles.
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE


IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
TUNGSTEN CARBIDE ICSC: 1320
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
GREY TO BLACK POWDER

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (tungsten and insoluble compounds) 5 mg/m as TWA, 10 mg/m as STEL; (ACGIH 2004).
MAK: IIb (not established but data is available) (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure to dust particles, resulting in fibrosis.
PHYSICAL PROPERTIES
Boiling point: 6000C
Melting point: 2780C
Density: 15.6 g/cm
Solubility in water: none
ENVIRONMENTAL DATA

NOTES
Alternative CAS number 11130-73-7. Health effects of exposure to the substance have not been investigated adequately. This material is often used in conjunction with other substances such as cobalt compounds. Pneumoconiosis has occurred in exposed persons. The responsible agent is not yet clear.
Card has been partly updated in April 2005. See section Occupational Exposure Limits.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999