Chlordane

CAS Number

57-74-9

Synonym

1,2,4,5,6,7,8,9-Octachloro-4,7-methano-3a,4,7,7a-tetrahydroindane; Chlorindan; Chlor Kil; Corodan; Dowchlor; Kypchlor; M 140; NCI-C00099; Niran; Octachlorodihydrodicyclopentadiene; Octa-Klor; Oktaterr; Synklor; Topiclor; Toxichlor; Velsicol 1068; EPA Pesticide Code: 058201; CAS 12789-03-6 (technical grade chlordane)

Occurrence/Use

Insecticide; fumigant. Use banned in the US in 1988.

Chlordane

Child-Specific Reference Dose

Child-specific refence dose (chRD) (mg/kg-day, unless noted): 3.3E-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 Unit Risk (μg/cubic meter)-1: 3.4 E-4
Inhalation Slope Factor (mg/kg-day)-1: 1.2 E+0
Oral Slope Factor (mg/kg-day)-1: 1.3 E+0
Comments/References:

OEHHA 1997. Public Health Goal for Chlordane in Drinking Water.

Note: Adopt US EPA value. Geometric mean. LMS. Surface area scaling.

 

OEHHA 1992. Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens.

Note: For Proposition 65, the number adopted in regulations for both routes of exposure is 1.3 (mg/kg day)^-1.

Proposition 65

Chemical Status

Cancer: Currently listed

Cancer

Cancer - Listing Mechanism
State's Qualified Experts
Listed as causing : Listed as causing: Cancer
Date of Listing:

Safe Harbor Levels

No Significant Risk Level (NSRL)
0.5 µg/day
Cancer

Water

California Public Health Goals Data

Health Risk Category: Carcinogenicity
Public Health Goal (mg/L): 0.00003
Public Health Goal - Download:
Cancer Risk at PHG: 0.000001
MCL value (mg/L): 0.0001
Cancer Risk at MCL: 0.000003
Last PHG Revision : 12/01/2006
California PHG Comments:

Value established in 1997; reviewed in 2006 without change.
OEHHA 2013. Health Risk Information for Public Health Goal Exceedance Reports