Tetrabutyltin
Tetrabutyltin (C16H36Sn) is a tetraalkyl organotin compound classified under HTS 2931.90.90.25 as an organo-inorganic compound where tin is directly linked to carbon atoms. It is primarily used as a reagent in organic synthesis and polymerization catalyst production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as inorganic tin compound without organic ligands
Pure inorganic phosphides, carbides, etc. of Chapter 28 exclude organo-inorganic compounds with C-metal bonds.
If supplied as solution with >70% solvent for safety/transport
Chapter 29 note (e) excludes solutions where solvent renders product suitable for specific use beyond general purposes.
If classified primarily by hydrocarbon chain rather than tin function
Saturated fluorinated hydrocarbons fall in 2903, but organotin compounds classified last per Chapter 29 note 3.
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Import Tips & Compliance
• Classify strictly as organo-tin under 2931.90.90.25; avoid Chapter 28 inorganic tin salts
• Provide Safety Data Sheets (SDS) and comply with TSCA regulations for organotin imports
• Ship as UN2788 hazardous material with proper flammability labeling
Related Products under HTS 2931.90.90.25
Tetrabutyltin IV (99% purity)
High-purity Tetrabutyltin (99%) meets HTS 2931.90.90.25 specifications for organo-tin compounds used in Stille coupling reactions and transalkylation processes. The direct tin-carbon bonds qualify it as an organo-inorganic compound per Chapter 29 definitions.
Tetrabutyltin Stabilized Solution
Tetrabutyltin stabilized with anti-oxidants for safe transport, classified under HTS 2931.90.90.25 per Chapter 29 note (f). The stabilizer is necessary for preservation without changing its organo-inorganic nature.
Tetrabutyltin for Polymerization Catalysis
Technical grade Tetrabutyltin specifically for olefin polymerization catalysis, classified HTS 2931.90.90.25. Meets Chapter 29 criteria for organo-inorganic tin compounds despite end-use labeling.
Distilled Tetrabutyltin (Lab Grade)
Laboratory reagent grade Tetrabutyltin, vacuum distilled for high purity, classified under HTS 2931.90.90.25. The organotin structure with four butyl groups directly bonded to tin qualifies per heading 2931 definitions.
Tetrabutyltin with Emetic Additive
Tetrabutyltin containing denatonium benzoate emetic for safety identification, classified HTS 2931.90.90.25 per Chapter 29 note (g). Additive facilitates identification without rendering specific for particular use.