Heptachlor

CAS Number

76-44-8

Synonym

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 Reference Dose

Child-specific refence dose (chRD) (mg/kg-day, unless noted):	3.0 E-5
Last chRD revision:	12/2005
chRD Comments:	OEHHA 2005. Child-Specific Reference Doses (chRDs) for School Site Risk Assessment: Cadmium, Chlordane, Heptachlor, Heptachlor epoxide, Methoxychlor and Nickel.

Soil Screening

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

Cancer Potency Information

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

Chemical Status

Cancer:	Currently listed
Reproductive Toxicity :	Currently listed

Cancer

Cancer - Listing Mechanism

State's Qualified Experts

Listed as causing :	Listed as causing: Cancer
Date of Listing:	07/01/1988

Reproductive Toxicity

Listed as causing:	Developmental Toxicity
Developmental Toxicity
Date of Listing:	08/20/1999
Basis for Listing :	Authoritative Bodies-US Environmental Protection Agency

Safe Harbor Levels

No Significant Risk Level (NSRL)

0.2 µg/day

Cancer

Documents, Presentations, and Publications

Reproductive Toxicity:	Listing Notice - 20 Chemicals August 20, 1999 August 20, 1999 Package 6a - Chemicals Meeting the Criteria for Listing via the AB Mechanism March 19, 1999

Reproductive Toxicity:

Listing Notice - 20 Chemicals August 20, 1999

August 20, 1999

Package 6a - Chemicals Meeting the Criteria for Listing via the AB Mechanism

March 19, 1999

Public notices related to this chemical

Water

California Public Health Goals Data

Health Risk Category:	Carcinogenicity
Public Health Goal (mg/L):	0.000008
Public Health Goal - Download:	hepandox.pdf
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:	OEHHA 2013. Health Risk Information for Public Health Goal Exceedance Reports