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3,3',4,4',5,5'-HxCB

CAS Number

32774-16-6

Synonym

PCB Congener, PCB 1691,1'-Biphenyl, 3,3',4,4',5,5'-hexachloro-

Occurrence/Use

From items containing PCB; present in some incinerator emissions. US manufacture banned in 1979.

3,3',4,4',5,5'-HxCB

Cancer Potency Information

Inhalation Unit Risk (μg/cubic meter)-1: 
1.1 E+0
Inhalation Slope Factor (mg/kg-day)-1: 
3.9 E+3
Oral Slope Factor (mg/kg-day)-1: 
3.9 E+3
Comments/References: 

OEHHA 2009. Air Toxics Hot Spots Program Technical Support Document for Cancer Potencies. Appendix B. Chemical-specific summaries of the information used to derive unit risk and cancer potency values. Updated 2011.