HS Code for Maleic anhydride

Maleic anhydride is classified under HS code 2917.14. Chapter 29 of the Harmonized System covers organic chemicals, and heading 2917 is dedicated to polycarboxylic acids, their anhydrides, halides, peroxides, and peroxyacids. Maleic anhydride is an acyclic polycarboxylic acid derivative with the formula C4H2O3. It is a chemically defined organic compound, typically produced by the oxidation of benzene or n-butane. Because it is a specific chemical compound with its own dedicated subheading, classification is straightforward under GRI 1. The code applies to the substance in various physical forms, such as briquettes, flakes, or molten liquid, provided it meets the purity requirements for a separate chemically defined compound. It is widely used in the production of unsaturated polyester resins, coatings, and agricultural chemicals, but its classification remains based on its chemical identity rather than its end use.

Products Included

• Pure maleic anhydride (crystalline)
• Maleic anhydride flakes
• Molten maleic anhydride
• Maleic anhydride briquettes
• Technical grade maleic anhydride

Common Misclassification

Maleic anhydride is occasionally misclassified under 2917.19, which is the "other" category for acyclic polycarboxylic acids. However, because 2917.14 is a specific named subheading for maleic anhydride, the "other" category is incorrect. It should also not be confused with Maleic Acid (2917.19), which is the hydrated form. While chemically related, the anhydride has its own specific code. Furthermore, it should not be classified in Chapter 38 as a resin precursor if it is a pure, chemically defined compound.

FAQ

What is the HS code for maleic anhydride?

The HS code for maleic anhydride is 2917.14.

Does the physical form (flake vs liquid) change the HS code?

No, maleic anhydride is classified under 2917.14 regardless of whether it is in solid flake, briquette, or molten liquid form.