Heptachlor
CAS Number
76-44-8Synonym
1,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene; Aahepta; Agroceres; Basaklor; 3-Chlorochlordene; GPKH; Heptachlorane; Heptagran; Heptagranox; Heptamak; Heptamul; Heptasol; Heptox; NCI-C0080; Rhodiachlor; Soleptax; EPA Pesticide Code: 044801
Occurrence/Use
Previously used as an insecticide; since 1988 use is restricted to controlling fire ants in underground transformers.
| Child-specific refence dose (chRD) (mg/kg-day, unless noted): |
3.0 E-5
|
|---|---|
| Last chRD revision: |
12/2005
|
| chRD Comments: |
| 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 |
| Latest Criteria: |
California Public Health Goals
|
|---|---|
| Inhalation Slope Factor (mg/kg-day)-1: |
4.1 E+0
|
| Oral Slope Factor (mg/kg-day)-1: |
4.1 E+0
|
| Comments/References: |
OEHHA 1999. Public Health Goal for Heptachlor and Heptachlor Epoxide in Drinking Water. Note: Geometric mean. LMS. surface area scaling factor of body weight to the 0.67 power. For Proposition 65 the number in regulation for both inhalation and oral is 4.5. |
Proposition 65
| Cancer: |
Currently listed
|
|---|---|
| Reproductive Toxicity: |
Currently listed
|
| Listed as causing: |
Cancer
|
|---|---|
| Date of Listing: |
07/01/1988
|
| Basis for Listing: |
State's Qualified Experts
|
| Listed as causing: |
Developmental Toxicity
|
|---|---|
| Developmental Toxicity | |
| Date of Listing: |
08/20/1999
|
| Basis for Listing: |
Authoritative Bodies-US Environmental Protection Agency
|
| Cancer | |
| No Significant Risk Level (NSRL): |
0.2 µg/day
|
|---|
| Reproductive Toxicity: |
|---|
Public notices related to this chemical:
- Chemicals Listed Effective August 20, 1999
- Notice of Intent to List 21 Chemicals
- Availability of Final Data Summaries and Priorities for Chemicals with Respect to Their Potential to Cause Birth Defects or Other Reproductive Harm
- Meeting of the Science Advisory Board's Developmental And Reproductive Toxicant Identification Committee
Water
| Health Risk Category: |
Carcinogenicity
|
|---|---|
| Public Health Goal (mg/L): |
0.000008
|
| Public Health Goal - Download: | |
| Cancer Risk at PHG: |
0.000001
|
| MCL value (mg/L): |
0.00001
|
| Cancer Risk at MCL: |
0.000001
|
| Last PHG Revision : |
1999
|
| California PHG Comments: |