2813.90.50.00/High Purity P4S3 for Organic Synthesis/Japan

High Purity P4S3 for Organic Synthesis from Japan

99% pure phosphorus trisulfide crystals employed as a thionating agent converting carbonyls to thiocarbonyls in pharmaceutical intermediates. HTS 2813.90.50.00 classifies it as commercial 'other' nonmetal sulfide. Excluded from Chapter 29 as purely inorganic per legal notes.

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 HPLC purity certificate (>98%); use Schlenk line handling instructions in docs; segregate from oxidizers per DOT 49 CFR