2832.20.00.00/Ammonium Sulfite Solution 40%/Japan

Ammonium Sulfite Solution 40% from Japan

A 40% aqueous solution of ammonium sulfite ((NH4)2SO3) used in wastewater treatment and as an oxygen scavenger. Classified under HTS 2832.20.00.00 as an 'other sulfite' of an inorganic base, meeting Chapter 28 definitions for chemically defined compounds.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Calculate with your customs value Verify classification with AI

Import Tips

• Include stability data in documentation; solutions may require UN hazmat certification for transport

• Label concentration precisely (e.g

• 40% w/v); discrepancies lead to reclassification as mixtures

• Obtain prior EPA notification if used in US water systems; import permits may apply for large volumes