Gamma-HCH Pharmaceutical Grade
Pharmaceutical-grade gamma-hexachlorocyclohexane (lindane) meeting USP standards, used as an active ingredient in scabicide synthesis. This is a pure, chemically defined isomer of 1,2,3,4,5,6-hexachlorocyclohexane, falling under tariff item 2903.81.00 as a halogenated derivative of a cyclanic hydrocarbon.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is formulated with other organo-sulphur compounds for a specific use
Organo-sulphur compounds are classified under heading 29.30, but pure lindane remains in 2903.81.00.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is clearly labeled as gamma-HCH (lindane) with purity documentation, as CBSA may verify chemical identity
• Verify whether the product requires a permit under the Pest Control Products Act if intended for pharmaceutical use
• Keep records of the USP specification to support classification under this tariff item
Related Products under Tariff item 2903.81.00
HCH Lindane Aqueous Solution 20%
A 20% aqueous solution of lindane (gamma-HCH) in water, used for safer handling in chemical synthesis. Per Chapter Note 1(d), products of this chapter dissolved in water are classifiable under the same heading, so this solution falls under tariff item 2903.81.00.
HCH Mixed Isomers Flake Form
Technical flakes of 1,2,3,4,5,6-hexachlorocyclohexane (HCH) containing mixed isomers including lindane, used for lindane extraction. This product is specifically named in tariff item 2903.81.00, covering HCH regardless of isomer composition, as it is a halogenated cyclanic hydrocarbon.
Lindane 99% Pure Crystals
High-purity lindane crystals (99% gamma-HCH) used in pharmaceutical and agricultural chemical synthesis. As a pure, chemically defined isomer of 1,2,3,4,5,6-hexachlorocyclohexane, it is classified under tariff item 2903.81.00, which specifically includes lindane.
Lindane Stabilized for Transport
Lindane powder with added stabilizers necessary for preservation or transport, maintaining its identity as a chemically defined HCH compound. Per Chapter Note 1(f), stabilizers added for preservation or transport do not affect classification, so this falls under tariff item 2903.81.00.
Lindane Technical Grade Powder
Technical grade lindane powder, chemically 1,2,3,4,5,6-hexachlorocyclohexane (gamma isomer), used as an intermediate in pesticide manufacturing. This is a halogenated derivative of a cyclanic hydrocarbon, specifically named in tariff item 2903.81.00, which includes lindane (ISO).
Purified Lindane Distillation Residue
Purified lindane distillation residue containing over 60% gamma-HCH isomers, used for secondary recovery or lower-grade synthesis. Despite being a residue, it retains its primary identity as 1,2,3,4,5,6-hexachlorocyclohexane, so it falls under tariff item 2903.81.00.