Polychlorinated Biphenyls
CAS Number
1336-36-3Synonym
Caswell No. 672A; Chlophen; Chlorextol; Chlorinated biphenyl; Chlorinated diphenyl; Chlorinated diphenylene; Chloro 1,1-biphenyl-; Dykanol; Fenclor; Inerteen; Kanechlor; Montar; Noflamol; PCB; Phenochlor; Polychlorobiphenyl; Pyralene; Pyranol; Santotherm; Sovol; Therminol; EPA Pesticide Code: 017801
Occurrence/Use
Formerly used in dielectric and coolant fluids; US manufacture banned in 1979
| Last CHHSL revision: |
1/2005
|
|---|---|
| CHHSL Comments: |
For chemical-specific screening levels for use in assessing contaminated sites, please see HHRA Note 3 (DTSC HERO). https://www.dtsc.ca.gov/assessingrisk/humanrisk2.cfm |
| Inhalation Unit Risk (μg/cubic meter)-1: |
5.7 E-4
|
|---|---|
| Inhalation Slope Factor (mg/kg-day)-1: |
2.0 E+0
|
| Oral Slope Factor (mg/kg-day)-1: |
2.0 E+0
|
| 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. Listed as Polychlorinated biphenyls (PCBs) (for use with unspeciated PCB mixtures).
US EPA 1989. IRIS Database: Polychlorinated biphenyls. Updated 1996.
CDHS (RCHAS) 1988. Risk-Specific Intake Levels for Polychlorinated Biphenyls. |
Air
| Chronic Inhalation REL (μg/m3): |
--
|
|---|---|
| Chronic Target Organs: |
Inhalation and oral: Alimentary system (liver); reproductive system; development; endocrine system; respiratory system; hematologic system
|
| Last Chronic REL Revision: |
2011
|
| Chronic Reference Exposure Levels Comments: |
Individual congeners evaluated using TEF methodology, relative to 2,3,7,8-tetrachlorodibenzo-p-dioxin. |
Proposition 65
| Cancer: |
Currently listed
|
|---|---|
| Reproductive Toxicity: |
Currently listed
|
| Listed as causing: |
Cancer
|
|---|---|
| Date of Listing: |
10/01/1989
|
| Basis for Listing: |
Labor Code
|
| Listed as causing: |
Developmental Toxicity
|
|---|---|
| Developmental Toxicity | |
| Date of Listing: |
01/01/1991
|
| Basis for Listing: |
State's Qualified Experts
|
| Cancer | |
| No Significant Risk Level (NSRL): |
0.09 µg/day
|
|---|
Public notices related to this chemical:
- Withdrawal of Rulemaking - Polychlorinated Biphenyls (Food Chain Exposures)
- Notice of Proposed Rulemaking Title 27, CCR Amendment to Section 25705 Specific Regulatory Levels Posing No Significant Risk and Amendment to Section 25805 Specific Regulatory Levels: Chemicals Causing Reproductive Toxicity: Polychlorinated Biphenyls
Water
| Health Risk Category: |
Carcinogenicity
|
|---|---|
| Public Health Goal (mg/L): |
0.00009
|
| Public Health Goal - Download: | |
| Cancer Risk at PHG: |
0.000001
|
| MCL value (mg/L): |
0.0005
|
| Cancer Risk at MCL: |
0.000006
|
| Last PHG Revision : |
2007
|
| California PHG Comments: |
Specified as water-soluble polychlorinated biphenyls (PCBs) expected to be found in drinking water- those with 4 or fewer chlorines and with a water solubility of 240 ug/L or more at 25 deg C. |
Comments
Polychlorinated biphenyls (containing 60 or more percent chlorine by molecular weight) listed separately.