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Carborundum Structure

Carborundum

Chemical Properties

Melting point 2700 °C (lit.)
Density  3.22 g/mL at 25 °C (lit.)
refractive index  2.6500
solubility  Soluble in molten sodium hydroxide, potassium hydroxide and in molten iron.
form  nanopowder
color  Green
Specific Gravity 3.22
Resistivity 107–200 (ρ/μΩ.cm)
Water Solubility  Soluble in molten alkalis (NaOH, KOH) and molten iron. Insoluble in water.
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Crystal Structure Cubic, Sphalerite Structure - Space Group F(-4)3m
Merck  14,8492
Exposure limits ACGIH: TWA 10 mg/m3; TWA 3 mg/m3; TWA 0.1 fiber/cm3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
NIOSH: TWA 10 mg/m3; TWA 5 mg/m3
Stability Stability
InChIKey HBMJWWWQQXIZIP-UHFFFAOYSA-N
EWG's Food Scores 3
FDA UNII WXQ6E537EW
NIST Chemistry Reference Silicon monocarbide(409-21-2)
IARC 2A (Vol. 111) 2017
EPA Substance Registry System Silicon carbide (409-21-2)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H350i
Precautionary statements P201-P202-P280-P308+P313-P405-P501
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
OEB B
OEL TWA: 10 mg/m3 (total)
WGK Germany  3
RTECS  VW0450000
TSCA  Yes
HS Code  28492000
Hazardous Substances Data 409-21-2(Hazardous Substances Data)
NFPA 704:
0
1 0

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