HS Code for Mirex

Mirex is classified under HS code 2903.83, which specifically identifies this substance as a halogenated derivative of cyclanic, cyclenic, or cycloterpenic hydrocarbons. Chapter 29 of the Harmonized System covers organic chemicals, and heading 2903 is dedicated to halogenated derivatives of hydrocarbons. Mirex, chemically known as dodecachlorooctahydro-1,3,4-metheno-2H-cyclobuta[cd]pentalene, is an organochlorine that was historically used as an insecticide and fire retardant. Because it is a specific, named compound in the international nomenclature (ISO), it is assigned its own unique subheading to facilitate monitoring under international environmental agreements like the Stockholm Convention. The classification depends on the chemical purity and the specific molecular structure that defines it as a cyclanic hydrocarbon derivative. As a halogenated derivative, the presence of chlorine atoms replacing hydrogen atoms in the hydrocarbon structure is the defining chemical characteristic for its placement within this specific branch of Chapter 29.

Products Included

• Technical grade Mirex
• Mirex (ISO) standard reference material
• Dodecachlorooctahydro-1,3,4-metheno-2H-cyclobuta[cd]pentalene
• Dechlorane (commercial name for Mirex)
• Analytical standards of Mirex

Common Misclassification

Mirex is often confused with other organochlorine pesticides. It may be misclassified under 2903.81, which is reserved for Lindane (ISO, INN), or 2903.82, which covers Aldrin, Chlordane, and Heptachlor. These substances are all halogenated derivatives of cyclanic hydrocarbons, but the HS system provides specific subheadings for each due to their status as persistent organic pollutants. Another common error is classifying Mirex under 3808.91 (insecticides) if it is prepared as a finished product. However, as a separate chemically defined compound, it must remain in Chapter 29 regardless of its intended use.

FAQ

What is the HS code for Mirex?

The HS code for Mirex is 2903.83, specifically for halogenated derivatives of cyclanic, cyclenic, or cycloterpenic hydrocarbons.

Is Mirex classified differently if used as a flame retardant?

Regardless of its application as a flame retardant or insecticide, if it is the pure chemical compound, it remains under 2903.83. Only if it is part of a prepared mixture or formulated product would the classification potentially move to Chapter 38.