NIOSH Pocket Guide to Chemical Hazards

Silicon tetrahydride CAS 7803-62-5
SiH4 RTECS VV1400000
Synonyms & Trade Names
Monosilane, Silane, Silicane
DOT ID & Guide
2203 116
NIOSH REL: TWA 5 ppm (7 mg/m3)
OSHA PEL†: none
IDLH N.D. Conversion 1 ppm = 1.31 mg/m3
Physical Description
Colorless gas with a repulsive odor.
MW: 32.1
BP: -169°F
FRZ: -301°F
Sol: Decomposes
VP: >1 atm
IP: ?
RGasD: 1.11

Fl.P: NA (Gas)
UEL: ?
LEL: ?

Flammable Gas (may ignite SPONTANEOUSLY in air).
Incompatibilities & Reactivities
Halogens (bromine, chlorine, carbonyl chloride, antimony pentachloride, tin(IV) chloride), water
Measurement Methods
None available
Personal Protection & Sanitation
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation

First Aid (See procedures)

Breathing: Respiratory support

Respirator Recommendations To be added later
Exposure Routes inhalation
Symptoms Irritation eyes, skin, mucous membrane; nausea, headache
Target Organs Eyes, skin, respiratory system, central nervous system