2931.90.90.21/Dibutyltin Oxide (DBTO)/Canada

Dibutyltin Oxide (DBTO) from Canada

Dibutyltin oxide is a white, solid organo-tin compound used primarily as a catalyst in the production of polyurethanes and silicones. It falls under HTS 2931.90.90.21 as an organo-inorganic compound containing tin directly linked to carbon atoms, specifically classified within organo-tin compounds. This chemically defined compound meets Chapter 29 note (a) for separate organic compounds.

Duty Rate — Canada → United States

110%

Rate breakdown

9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter

9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter

Calculate with your customs value Verify with the Tariff Assistant

Import Tips

• Verify chemical purity and provide Certificate of Analysis (CoA) to confirm identity as dibutyltin oxide per Chapter 29 note (a)

• Include Safety Data Sheet (SDS) detailing toxicity; organo-tin compounds require EPA TSCA registration for US import

• Avoid misclassification as mixtures; ensure product meets 'separate chemically defined compound' criteria to prevent reclassification