Methylphosphonic Acid (99% Purity) from Canada
Methylphosphonic acid is a non-halogenated organo-phosphorus compound with the formula CH3P(O)(OH)2, classified under HTS 2931.44.00.00 as a separate chemically defined organic compound containing phosphorus directly linked to carbon. It serves as a key intermediate in synthesizing flame retardants and herbicides.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify purity certificate and chemical analysis to confirm classification under 2931.44; ensure SDS and proper UN packaging for Hazard Class 8 corrosive material
• Avoid misclassification as pesticide formulations which fall outside Chapter 29