High Purity Methylphosphonic Acid for Synthesis from Canada
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 — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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