Trimethyl Phosphite from Japan

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 — 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

• 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