3,3',4,4'-TCB
CAS Number
32598-13-3Synonym
PCB congener, PCB 77; 1,1'-biphenyl, 3,3',4,4'-tetrachloro-
Occurrence/Use
Used as dielectric fluids in transformers and capacitors. PCB manufacture in the US was discontinued in 1977, and importation banned in 1979.
Cancer Potency Information
| Inhalation Unit Risk (μg/cubic meter)-1: | 3.8 E-3 |
|---|---|
| Inhalation Slope Factor (mg/kg-day)-1: | 1.3 E+1 |
| Oral Slope Factor (mg/kg-day)-1: | 1.3 E+1 |
| 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. |