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2931.49.00.80/Tert-Butylphosphonic Acid/China

Tert-Butylphosphonic Acid from China

Tert-butylphosphonic acid (t-BuP(O)(OH)2) contains direct P-C bond to tertiary butyl group. Classified HTS 2931.49.0080 as non-halogenated organo-phosphorus derivative. Used in metal surface treatment and polymer additives.

Duty Rate — China → United States

16.2%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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Import Tips

• pH stability data required for aqueous solutions

• Corrosive solid UN 3261; proper inner packaging essential

• Avoid classification as mixture if >90% purity

Tert-Butylphosphonic Acid from China — Import Duty Rate | HTS 2931.49.00.80