New

Ask Wove anything about tariffs.

Try Tariff Assistant

Petroleum Sulfonic Acid Sodium Salt

Mahogany sulfonates from petroleum refining, aromatic fraction, classified HTS 2904.10.32.00 per note 3. Used as emulsifiers in oilfield chemicals.

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.

2710.19.11Lower: 25% vs 43%

If crude petroleum oils

High petroleum content classifies with hydrocarbons.

3403.19Lower: 18.3% vs 43%

If lubricating preparations

Oil-soluble formulations become lubricants.

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

• Sulfonate content >50% required for chapter 29 classification

• AN (acid number) 10-30 specification verification

• Dark color natural; not purity indicator