HS Code for Hexachlorobenzene

Hexachlorobenzene (HCB) is classified under HS code 2903.92. This classification is situated within Chapter 29, which covers organic chemicals. Specifically, heading 2903 pertains to halogenated derivatives of hydrocarbons. Subheading 2903.92 is reserved for hexachlorobenzene (ISO) and DDT (ISO). As a pure chemical compound with a defined molecular structure (C6Cl6), it is classified as an aromatic hydrocarbon derivative where all hydrogen atoms have been replaced by chlorine. This classification is strictly for the chemical in its separate chemically defined form, rather than as part of a mixture or a formulated product. Hexachlorobenzene is a persistent organic pollutant (POP) and is heavily regulated under the Stockholm Convention. In the Harmonized System, aromatic hydrocarbons are those containing at least one benzene ring. Since HCB consists of a benzene ring where all six hydrogens are substituted with chlorine atoms, it fits perfectly into the aromatic category of 2903.9. The specific subheading 2903.92 was created to facilitate the monitoring and control of this substance due to its environmental and health impacts. Importers must ensure that the product is not a preparation or mixture, as that would shift the classification to Chapter 38.

Products Included

• Pure hexachlorobenzene (technical grade)
• Analytical standard hexachlorobenzene
• Crystalline hexachlorobenzene (separate chemically defined)
• Hexachlorobenzene for laboratory research

Common Misclassification

Hexachlorobenzene is frequently confused with hexachlorocyclohexane (HCH), which is classified under 2903.81. The distinction lies in the chemical structure: HCB is aromatic (benzene-based), while HCH is cyclanic (cyclohexane-based). Another common error is classifying HCB mixtures under 2903.92; mixtures containing HCB are correctly classified under 3824.86. Finally, formulated pesticides containing HCB would fall under 3808.91 or 3808.92.

FAQ

What is the HS code for pure hexachlorobenzene?

The HS code for pure, separate chemically defined hexachlorobenzene is 2903.92.

Is hexachlorobenzene the same as Lindane?

No. Lindane is an isomer of hexachlorocyclohexane and is classified under HS code 2903.81, whereas hexachlorobenzene is an aromatic compound under 2903.92.