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12039-88-2

Name TUNGSTEN SILICIDE
CAS 12039-88-2
EINECS(EC#) 234-909-0
Molecular Formula Si2W
MDL Number MFCD00049704
Molecular Weight 240.01
MOL File 12039-88-2.mol
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Chemical Properties

Appearance Blue-gray, very hard solid. Insoluble in water; attacked by fused alkalies and mixture of nitric and hydrofluoric acids.
Melting point  2165°C
density  9,88 g/cm3
solubility  insoluble in H2O
form  Powder
color  blue-gray tetragonal crystals, crystalline
Specific Gravity 9.88
Resistivity 33.4 (ρ/μΩ.cm)
Water Solubility  Insoluble in water.
Crystal Structure Tetragonal
Hydrolytic Sensitivity 2: reacts with aqueous acid
Exposure limits ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
Uses
Oxidation-resistant coatings, electrical resistance and refractory applications.
CAS DataBase Reference 12039-88-2
EPA Substance Registry System Tungsten silicide (WSi2) (12039-88-2)

Safety Data

Safety Statements 
WGK Germany  3
TSCA  Yes

Hazard Information

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