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Chemical Sampling Information (CSI)
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General Description

Synonyms: Chromic acid; di-tert-Butyl ester; bis(tert-Butyl) chromate

OSHA IMIS Code Number: 0473
IMIS Code history: used prior to 05/30/2006 and the Chromium (VI) standard

Chemical Abstracts Service (CAS) Registry Number: 1189-85-1

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: GB2900000

NIOSH Pocket Guide to Chemical Hazards, tert-Butyl Chromate: chemical description, physical properties, potentially hazardous incompatibilities, and more


Exposure Limits

OSHA Permissible Exposure Limit (PEL):
General Industry: 29 CFR 1910.1000 Z-1 Table -- See Chromium (VI) (Hexavalent Chromium)

Construction Industry: 29 CFR 1926.55 Appendix A -- See Chromium (VI) (Hexavalent Chromium)

Maritime: 29 CFR 1915.1000 Table Z-Shipyards -- See Chromium (VI) (Hexavalent Chromium)
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.1 mg/m3 Ceiling; Skin

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.001 mg Cr(VI)/m3 10-hr TWA; Carcinogenic; Appendix A - NIOSH Potential Occupational Carcinogens; Appendix C - Supplementary Exposure Limits


Health Factors

Monitoring Methods used by OSHA

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Page last updated: 06/30/2006