High Purity Methylphosphonic Acid for Synthesis from United States
High purity methylphosphonic acid (99.9%) is a separate chemically defined organo-inorganic compound containing a phosphorus atom directly linked to carbon. It is classified under tariff item 2931.44.00 as a non-halogenated organo-phosphorous derivative, specifically methylphosphonic acid. This product is intended for laboratory and pharmaceutical synthesis, meeting the criteria of Chapter 29 Note 1(a).
Duty Rate — United States → Canada
Import Tips
• Ensure the product is accompanied by a certificate of analysis confirming purity and chemical identity to support classification under 2931.44.00
• Verify if the product requires an import permit under the Chemical Weapons Convention regulations, as methylphosphonic acid is a Schedule 2 chemical
• Declare the correct CAS number (993-13-0) on customs documentation to avoid delays