NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Silicon tetrahydride

CAS
7803-62-5

SiH4

RTECS
VV1400000
Synonyms & Trade Names

Monosilane, Silane, Silicane
DOT ID & Guide
2203 / 116

Exposure
Limits

NIOSH REL: TWA 5 ppm (7 mg/m3)
OSHA PEL: none
IDLH
N.D. See: IDLH INDEX
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
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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
Not available.
Important additional information about respirator selection
Exposure Routes
inhalation
Symptoms
Irritation eyes, skin, mucous membrane; nausea, headache
Target Organs
Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION   See ICSC CARD: 0564