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Chemical Sampling Information (CSI)
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General Description

Synonyms: Silane

OSHA IMIS Code Number: 2237

Chemical Abstracts Service (CAS) Registry Number: 7803-62-5

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: VV1400000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2203 116

NIOSH Pocket Guide to Chemical Hazards, Silicon tetrahydride: Chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:
gas
Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 ppm, 6.6 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 ppm TWA

Health Factors

Health Effects: Acute Systemic Toxicity (Analogy with other metal hydrides) (HE4)

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Midget Fritted Glass Bubbler (MFGB) containing 15 mL 0.01 N+ KOH
    maximum volume: 480 Liters   
    maximum flow rate: 1.0 L/min
    current analytical method: Atomic Absorption Spectroscopy; AAS/GF
    method reference: 2 (OSHA In-house file)
    method classification: Not Validated
    note: Submit as a separate sample. Analysis is performed for total Silicon and reported as the compound. Samples should be stored and shipped in plastic as soon after sampling as possible. Keep blank solution in MFGB for the same time period as samples.
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Page last updated: 01/15/1993