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2931.44.00.00/High Purity Methylphosphonic Acid for Synthesis/China

High Purity Methylphosphonic Acid for Synthesis from China

Ultra-high purity methylphosphonic acid (99.9%) for laboratory and pharmaceutical synthesis, classified under HTS 2931.44.00.00 as a separate chemically defined organo-inorganic compound. Essential precursor for advanced phosphonate drugs and ligands.

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

• Submit TSCA certification for new chemical import; segregate from amines to avoid reactions

• Common pitfall: incorrect purity declaration leading to Chapter 38 reclassification

High Purity Methylphosphonic Acid for Synthesis from China — Import Duty Rate | HTS 2931.44.00.00