Trimethyl Phosphite from Mexico
Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, classified under HTS 2920.29.00.00 as a phosphite ester. It is used as a reagent in organic synthesis and as an intermediate for pesticides and flame retardants.
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
• Provide detailed chemical analysis certificates confirming phosphite ester structure to avoid misclassification
• Ensure SDS and purity documentation; impurities may trigger reclassification under Chapter 28
• Label containers with UN numbers for phosphorous compounds to comply with DOT hazardous material regulations