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Silicon tetrahydride Structure

Silicon tetrahydride

Chemical Properties

Melting point -185 °C
Boiling point -112 °C
Density  1.114 g/mL at 25 °C(lit.)
vapor density  1.1 (vs air)
vapor pressure  100kPa at 20℃
solubility  reacts with H2O; insoluble in ethanol,benzene
form  colorless gas
Specific Gravity 0.680
color  colorless gas; flammable
Odor repulsive odor
Water Solubility  decomposed by H2O; insoluble alcohol, benzene [HAW93]
Hydrolytic Sensitivity 10: reacts extremely rapidly with moisture and oxygen - may be pyrophoric - sealed system required
Merck  13,8562
Exposure limits TLV-TWA 5 ppm (6.5 mg/m3) (ACGIH).
EWG's Food Scores 1
FDA UNII 5J076063R1
EPA Substance Registry System Silane (7803-62-5)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H220-H280
Precautionary statements P410+P403-P210-P377-P381-P403
Hazard Codes  F+,Xn
Risk Statements  12-17-20
Safety Statements  9-16-33-36/37/39
RIDADR  UN 2203 2.1
OEB B
OEL TWA: 5 ppm (7 mg/m3)
WGK Germany  1
RTECS  VV1400000
TSCA  Yes
DOT Classification 2.1 (Flammable gas)
HazardClass  2.1
Hazardous Substances Data 7803-62-5(Hazardous Substances Data)
NFPA 704:
4
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Silicon tetrahydride Chemical Properties,Usage,Production

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