1. Home
  2. Library
  3. Chemicals
  4. 3,4,4'5-TCB

3,4,4'5-TCB

CAS Number

70362-50-4

Synonym

PCB Congener, PCB 81; 3,4,4',5-Tetrachlorobiphenyl

Occurrence/Use

Byproduct of production of chlorinated organic chemicals

Cancer Potency Information

Inhalation Unit Risk (μg/cubic meter)-1: 
1.1 E-2
Inhalation Slope Factor (mg/kg-day)-1: 
3.9 E+1
Oral Slope Factor (mg/kg-day)-1: 
3.9 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.