Nomenclature
CAS number: 409-21-2
CSi; mol wt 40.10.
C 29.95%, Si 70.04%.
SiC.
Description and references
Made by heating coke and sand (and salt as
flux) in electric furnace.
Properties
Exceedingly hard, green to bluish-black, iridescent,
sharp crystals; hardness = 9.5. d 3.23. Dielectric constant: 7.0. Electron mobility:
>100 cm2/volt-sec. Hole mobility: >20 cm2/volt-sec. Band gap energy: 2.8 ev.Caution
Potential symptoms of overexposure
are irritation of eyes, skin, upper respiratory system; cough. See NIOSH Pocket Guide to Chemical
Hazards (DHHS/NIOSH 97-140, 1997) p 278.Use
Polishing glass, granite; smoothing bisque ware;
in sharpening-stones; abrasive; manuf porcelain, “emery” paper and
wheels, shoe soles, refractory brick, furnace linings; antiskid pavements;
in semiconductor technology.