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Dinonylnaphthalenesulfonic Acid

Dinonylnaphthalenesulfonic acid is a high molecular weight aromatic sulfonic acid under HTS 2904.10.32.00. Used in metal extraction and oil additives.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China5.5%+37.5%43%
🇲🇽Mexico5.5%+10.0%15.5%
🇨🇦Canada5.5%+10.0%15.5%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+12.5%12.5%

Alternative Classifications

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

3811.21.00.00Higher: 44% vs 43%

If metalworking additives

Formulated additives for lubricants classify under chapter 38.

3824.99.93Lower: 42.5% vs 43%

If proprietary mixtures

Commercial blends exceed pure compound classification.

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

• Confirm two C9 alkyl chains on naphthalene ring

• Viscosity specification critical for classification

• Hazardous material shipping (viscous liquid)