2920.22.00.00/Distilled Diethyl Phosphite 99.5% Purity/Japan

Distilled Diethyl Phosphite 99.5% Purity from Japan

Vacuum-distilled diethyl phosphite achieving 99.5% purity for pharmaceutical phosphonate intermediate synthesis. Falls under HTS 2920.22.00.00 as high-purity phosphite ester per Chapter 29 chemical definition.

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

• Submit HPLC chromatogram showing single peak >99.5% to confirm chemically defined status

• Pharma imports need DMF reference or equivalent; common rejection for missing impurity profile

• Temperature-controlled shipping mandatory (maintain <15°C) to preserve purity