Bromodichloromethane

CAS Number

75-27-4

Synonym

BDCM; Dichlorobromomethane; Dichloromethylbromide; Monobromodichloromethane; NCI-C55243

Occurrence/Use

Chemical intermediate (organic). Found in drinking water as byproduct of chlorination process. Formerly used as flame retardent and solvent.

Bromodichloromethane

Cancer Potency Information

Inhalation Unit Risk (μg/cubic meter)-1:	3.7 E-5
Inhalation Slope Factor (mg/kg-day)-1:	1.3 E-1
Oral Slope Factor (mg/kg-day)-1:	1.3 E-1
Comments/References:	US EPA 1987. IRIS Database: Bromodichloromethane. Updated 1993. NTP 1987. Toxicology and Carcinogenesis Studies of Bromodichloromethane (CAS No. 75-27-4) in F344/N Rats and B6C3F1 Mice (Gavage Studies).

Proposition 65

Chemical Status

Cancer:	Currently listed

Cancer

Listed as causing:	Cancer
Date of Listing:	01/01/1990
Basis for Listing:	Authoritative Bodies-US Environmental Protection Agency

Safe Harbor Levels

Cancer
No Significant Risk Level (NSRL):	5 µg/day

Water

California Public Health Goals Data

Health Risk Category:	Carcinogenicity
Public Health Goal - Download:	thmsphgdraft110819.pdf
California PHG Comments:	Announcement of Availability of a Draft Technical Support Document for Proposed Public Health Goals for Trihalomethanes in Drinking Water Announcement of Availability of a Second Public Review Draft Technical Support Document for Proposed Public Health Goals for Trihalomethanes in Drinking Water