alpha-hexachlorocyclohexane alpha-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-hchα-benzenehexachlorideα-bhcalpha-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 ykey: jlyxxmfpniawkq-lkpkboigsa-n yinchi=1/c6h6cl6/c7-1-2(8)4(10)6(12)5(11)3(1)9/h1-6h/t1-,2-,3-,4-,5+,6+/m0/s1key: jlyxxmfpniawkq-lkpkboigbo smiles cl1(cl)(cl)(cl)(cl)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 , 100 kpa). y verify (what is yn ?) infobox references