Trimethyl Phosphite from Mexico
Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, classified under HTS 2920.23.00.00 as a phosphite ester. It serves as a key reagent in organic synthesis for producing pesticides, flame retardants, and pharmaceutical intermediates.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain chemical import license and ensure SDS compliance with TSCA pre-manufacture notification if not on inventory
• Verify purity certificate (>98%) as impurities may affect classification; package in UN-approved drums for phosphite hazards
• Avoid misclassification as pesticide intermediate; declare as pure chemical reagent to prevent higher duties