1,2,3,4,5,6-Hexachlorocyclohexane is an organochloride compound and one of the isomers of hexachlorocyclohexane (HCH). It is a byproduct of the production of the insecticide lindane (gamma-HCH) and typically constitutes 5–14% of technical-grade lindane.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
CAS 319-84-6
Β-hexachlorocyclohexane
insecticide
Delta-hexachlorocyclohexane
insecticide for agricultural and veterinary use
Lindane
insecticide for agricultural and veterinary use
Fipronil
Insecticide for agricultural and veterinary use
2,3-dichloronitrobenzene
agricultural chemical intermediate
Thiodiazole-copper
fungicide for agricultural crops
2-Chloro-5-methyl-4-(trifluoromethyl)pyridine
herbicide intermediate
Trichloronate
non-systemic insecticide for soil pests
The international HS code for 1,2,3,4,5,6-Hexachlorocyclohexane (CAS 319-84-6) is 2903.81.
2903.81
2903 81 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
1,2,3,4,5,6-hexachlorocyclohexane
JLYXXMFPNIAWKQ-UHFFFAOYSA-N
C1(C(C(C(C(C1Cl)Cl)Cl)Cl)Cl)Cl