α-Hexachlorocyclohexane

α-Hexachlorocyclohexane (α-HCH) is an organochloride which is one of the isomers of hexachlorocyclohexane (HCH). It is a byproduct of the production of the insecticide lindane (γ-HCH) and it is typically still contained in commercial grade lindane used as insecticide. Lindane, however, has not been produced or used in the United States for more than 20 years. At ambient temperatures it is a stable, white, powdery solid substance. As of 2009, the Stockholm Convention on Persistent Organic Pollutants classified (α-HCH) and (β-HCH) as persistent organic pollutants (POPs), due to the chemical's ability to persistence in the environment, bioaccumulative, biomagnifying, and long-range transport capacity.

α-hexachlorocyclohexane

Names
Preferred IUPAC name (1R,2R,3S,4S,5S,6S)-1,2,3,4,5,6-Hexachlorocyclohexane
Other names α-HCH α-Benzenehexachloride α-BHC alpha-hexacloran(e) alpha-Lindane
Identifiers
CAS Number	319-84-6 Y
3D model (JSmol)	Interactive image
ChemSpider	16740741 Y
ECHA InfoCard	100.005.702
EC Number	206-270-8
RTECS number	GV3500000
UNII	IVM9A2N49K Y
UN number	2761, 2811, 3082
CompTox Dashboard (EPA)	DTXSID2020684
InChI InChI=1S/C6H6Cl6/c7-1-2(8)4(10)6(12)5(11)3(1)9/h1-6H/t1-,2-,3-,4-,5+,6+/m0/s1 Y Key: JLYXXMFPNIAWKQ-LKPKBOIGSA-N Y InChI=1/C6H6Cl6/c7-1-2(8)4(10)6(12)5(11)3(1)9/h1-6H/t1-,2-,3-,4-,5+,6+/m0/s1 Key: JLYXXMFPNIAWKQ-LKPKBOIGBO
SMILES Cl[C@H]1[C@@H](Cl)[C@H](Cl)[C@H](Cl)[C@@H](Cl)[C@@H]1Cl
Properties
Chemical formula	C6H6Cl6
Molar mass	290.83 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

See also

• β-Hexachlorocyclohexane

External links

• α-hexachlorocyclohexane United States Environmental Protection Agency IRIS fact sheet
• Cyclohexane, 1,2,3,4,5,6-hexachloro-, (1α,2β,3α,4β,5α,6β)- – NIST