2931.90.90.29/Bis(tributyltin) Oxide/Japan

Bis(tributyltin) Oxide from Japan

Biochemical reagent and antifouling agent with characteristic Sn-C bonds in tributyl groups. HTS 2931.90.90.29 covers this organo-tin compound excluded from specific subheadings.

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

• Restricted under International Maritime Organization AFS Convention; verify port-state controls

• Declare exact tributyltin content per EPA method 8270 for environmental compliance

• Pure form stays in 2931; antifouling paint mixtures shift to 3208 or 3808