Silicon carbide

Synonyms & Trade Names
Carbon silicide, Carborundum®, Silicon monocarbide
CAS No.
409-21-2
RTECS No.
DOT ID & Guide
Formula
SiC
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
OSHA PEL
TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) See Appendix G
Measurement Methods
NIOSH 0500 , 0600
See: NMAM or OSHA Methods
Physical Description
Yellow to green to bluish-black, iridescent crystals.
Molecular Weight
40.1
Boiling Point
Sublimes
Melting Point
4892°F (Sublimes)
Solubility
Insoluble
Vapor Pressure
0 mmHg (approx)
Ionization Potential
9.30 eV
Specific Gravity
3.23
Flash Point
NA
Upper Exposive Limit
NA
Lower Explosive Limit
NA
Noncombustible Solid
Incompatibilities & Reactivities
None reported [Note: Sublimes with decomposition at 4892°F.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; cough
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin:No recommendation
Eyes:No recommendation
Wash skin:No recommendation
Remove:No recommendation
Change:No recommendation
First Aid
(See procedures)
Eye:Irrigate immediately

Breathing:Fresh air
Swallow:Medical attention immediately
Respirator Recommendations
See also
INTRODUCTION   ICSC CARD: 1061
Page last reviewed: October 17, 2018