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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: S120

Chemical Abstracts Service (CAS) Registry Number: 7440-21-3

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: VW0400000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 1346 170

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

Chemical Description and Physical Properties:

solid
Exposure Limits

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 mg/m3 TWA

Health Factors

Health Effects: Nuisance particulate-Accumulation in lungs (HE19) IC_CAS_NUMBEL097440-21-3
Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:

  • See Particulates not otherwise regulated (Respirable Fraction)
    note: It is suggested that a respirable quartz sample be submitted to the laboratory to determine applicability of quartz standard. Submit bulk sample in separate mailing container at time air samples are submitted.
    method reference: 11, 2 (OSHA ID-142)

Wipe Sampling Method: No

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Page last updated: 01/15/1993