CHROMYL CHLORIDE

OSHA comments from the January 19, 1989 Final Rule on Air Contaminants Project extracted from 54FR2332 et. seq. This rule was remanded by the U.S. Circuit Court of Appeals and the limits are not currently in force.

CAS: 14977-61-8; Chemical Formula: CrO₂Cl₂

There is no existing OSHA PEL for chromyl chloride. The ACGIH recommended that a TWA of 0.025 ppm be established, based on this substance’s carcinogenic potential (ACGIH 1986/Ex. 1-3, p. 141). The evidence in humans is considered sufficient for the carcinogenicity of chromium and chromium compounds, and these have been given a Group 1 classification by the International Agency for Research on Cancer (IARC). As discussed above in connection with chromic acid, chromates, and zinc chromates, the chromium compounds present several important issues that require detailed analysis and can most appropriately be handled in an individual Section 6(b) rulemaking. NIOSH concurred with this approach (Ex. 8-47, Table N6B), and no other comments on chromyl chloride were received. OSHA intends to commence work on this rulemaking as priorities permit.