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Chemical Sampling Information (CSI)
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General Description

OSHA IMIS Code Number: M111

Chemical Abstracts Service (CAS) Registry Number: 7439-97-6

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: OV4550000

Department of Transportation Regulation Number (49 CFR 172.101) and Guide: 2809 172 (metal)

NIOSH Pocket Guide to Chemical Hazards, Mercury (Aryl and Inorganic) (as Hg): chemical description, physical properties, potentially hazardous incompatibilities, and more

Exposure Limits

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 mg/m3 TWA (Skin) Aryl -- 0.025 mg/m3 TWA (Skin); Appendix A4 (Not Classifiable as a Human Carcinogen) Inorganic (inc. metallic mercury)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.1 mg/m3 Ceiling (Skin)


Health Factors

Carcinogenic Classification:
International Agency for Research on Cancer (IARC): Group 2B, possibly carcinogenic to humans [8 MB PDF, 107 pages]
Monitoring Methods used by OSHA

Primary Sampling/Analytical Method (SLC1):
  • Mixed Cellulose Ester Filter (MCEF) 0.8 micron
    maximum volume: 30 Liters
    minimum time: 15 Minutes
    maximum flow rate: 2.0 L/min (Ceiling)
    current analytical method: Atomic Absorption Spectroscopy; AAS/Cold Vapor
    method reference: 2 (OSHA ID-145)
    sampling and analytical error: 0.19
    method classification: Fully Validated
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Page last updated: 01/11/1999

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