Tributyltin Oxide from Japan

Tributyltin oxide is an organo-tin compound where tin atoms are directly linked to carbon atoms in butyl groups, classifying it under HTS 2931.90.90.29 as other organo-tin compounds. It is commonly used as a biocide in antifouling paints for marine applications.

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

• Verify REACH and TSCA registration due to strict environmental regulations on organotin biocides

• Include detailed safety data sheets (SDS) and confirm Sn-C bonding for proper Chapter 29 classification

• Avoid misclassification as pesticide formulations under Chapter 38; pure compounds stay in 2931