Trimethyl Phosphite from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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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