Carbon silicide
Silicon monocarbide
SiC
Molecular mass: 40.1
ICSC # 1061
CAS # 409-21-2
RTECS # VW0450000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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•Inhalation
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Cough.
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Avoid inhalation of
dust
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Fresh air, rest.
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•Skin
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•Eyes
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Redness.
Pain.
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Safety goggles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: P1 filter respirator for inert particles.
Sweep spilled substance into covered containers.
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Important Data
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Physical State; Appearance:
YELLOW
TO GREEN
TO BLUE
TO BLACK
CRYSTALS
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DEPENDING ON PURITY
Physical Dangers:
Chemical Dangers:
Occupational Exposure Limits:
TLV: (as inhalable dust) 10 mg/m3 as TWA; TLV: (as respirable dust) 3 mg/m3 as TWA; (ACGIH 2004).
MAK: (respirable fraction of the aerosol) 1.5 mg/m3 (DFG 2004).
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
NIOSH IDLH: N.D. See: IDLH INDEX
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Routes of Exposure:
Inhalation Risk:
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.
Effects of Short-Term Exposure:
May cause mechanical irritation.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Sublimation point: 2700°C
Density: 3.2
g/cm3
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Solubility in water:
none
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Environmental
Data
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N O T E S
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This card does not apply to silicon carbide in fibrous or whisker form.
Carborundum is a trade name.
There is evidence of fibrosis in mixed dust situations, the risk of which is enhanced in persons with tuberculosis. There is no evidence that silicon carbide (non-fibrous) causes fibrosis in the absence of other dusts.
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ADDITIONAL INFORMATION
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ICSC: 1061
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SILICON CARBIDE (non-fibrous)
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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