Hexachlorocyclohexane- Gamma Isomer

CAS Number

58-89-9

Synonym

Gamma benzene hexachloride; Gamma-BHC; Gamma-hexachlorocyclohexane; Lindane; 1,2,3,4,5,6-hexachlorocyclohexane; EPA Pesticide Code: 009001

Occurrence/Use

Insecticide, miticide. Agricultural use in the US ended 2007; the Stockholm Convention (2009) banned production and agricultural use, but pharmaceutical use is allowed until 2015. Pharmaceutical uses have been banned in California since 2002.

Cancer Potency Information

Inhalation Unit Risk (μg/cubic meter)-1:	3.1 E-4
Oral Slope Factor (mg/kg-day)-1:	1.1
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. Listed as Lindane. OEHHA 1992. Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens. Listed as gamma-HCH.

Inhalation Unit Risk (μg/cubic meter)-1:

3.1 E-4

Oral Slope Factor (mg/kg-day)-1:

1.1

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.

Listed as Lindane.

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

Listed as gamma-HCH.

Air

Water

California Public Health Goals Data

Public Health Goal (mg/L):	0.000032
Public Health Goal - Download:	lindanememo062205.pdf
Last PHG Revision :	06/22/2005
California PHG Comments:	Value established in 1999 and reviewed in 2005 without change.