Dibutyltin oxide
Other organo-inorganic compounds: > Other: > Other: > Other > Organo-tin compounds: > Dibutyltin oxide
Duty Rate (from China)
Except as provided in headings 9903.88.33, 9903.88.34, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(g) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(g)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2931.90.90.21
Dibutyltin Oxide (DBTO)
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.
High Purity Dibutyltin Oxide Catalyst
High purity grade (>99%) dibutyltin oxide used in esterification and transesterification reactions in fine chemical manufacturing. Classified under HTS 2931.90.90.21 as a specific organo-tin compound per the statistical suffix. Meets Chapter 29 requirements for chemically defined compounds with tin directly linked to carbon.
Dibutyltin Oxide Polyurethane Catalyst
Specialty dibutyltin oxide formulation optimized for polyurethane foam production, acting as gelling and blowing catalyst. Falls under HTS 2931.90.90.21 as the pure organo-tin compound before formulation into end-use mixtures. Excluded from Chapter 38 as it's a separate chemically defined compound per Chapter 29 note (a).
Technical Grade Dibutyltin Oxide
Technical grade dibutyltin oxide (95-98% purity) for industrial silicone curing applications. HTS 2931.90.90.21 classification applies to this organo-inorganic tin compound despite minor impurities, as it remains a separate chemically defined compound under Chapter 29 note (a).
Dibutyltin Oxide Silicone Crosslinker
Dibutyltin oxide serving as heat-activated crosslinker in RTV silicone sealants and adhesives. Classified in HTS 2931.90.90.21 as pure organo-tin compound, distinct from formulated sealant products. Direct tin-carbon bonds qualify it as organo-inorganic per Chapter 29 heading 2931 definition.