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Naphthalene-Derived Maleic Anhydride (Industrial Grade)

High-purity maleic anhydride from naphthalene oxidation (aromatic hydrocarbon), classified in HTS 2917.14.10.00 as specified for aromatic-derived acyclic polycarboxylic anhydrides. Essential for alkyd resin manufacturing and paper sizing applications.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China6.5%+37.5%44%
🇲🇽Mexico6.5%+10.0%16.5%
🇨🇦Canada6.5%+10.0%16.5%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+12.5%12.5%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2917.14Same rate: 44%

If when produced via butane/butene catalytic air oxidation

Petrochemical process changes derivation source from aromatic hydrocarbons.

2932.99Lower: 16.2% vs 44%

If heterocyclic oxygen compounds containing anhydride groups

Structural changes creating heterocyclic rings shift to different chapter heading.

3907.61.00Same rate: 44%

If imported as unsaturated polyester resin containing >50% maleic anhydride

Polymerized forms classified as plastics rather than chemical monomers.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Include GC-MS analysis confirming <0.5% maleic acid content for pure anhydride classification

• Declare proper flash point (104°C) and autoignition temperature on shipping papers

• Monitor for fumaric acid impurities that could affect duty classification