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Cumene Sulfonic Acid Sodium Salt

This sodium salt of cumene sulfonic acid is an aromatic sulfonate with isopropyl substitution, classified in HTS 2904.10.32.00 per section VI note 3. Applied in hydrotropic formulations for cleaners.

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.

3402.90.50Lower: 41.2% vs 43%

If surface-active preparations

Formulations >10% surfactant content classify as finished products.

2842.90.90Lower: 40.8% vs 43%

If considered inorganic salt dominant

High sodium content may lead Customs to inorganic 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 compliance with additional U.S. note 3 concentration limits

• Include NMR spectra verifying aromatic sulfo structure

• Biodegradability testing recommended for EPA registration