Methylphosphonic Acid (99% Purity) from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, 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