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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing precious metal catalytic impurities > specified limits
Precious metal compounds take precedence over organo-inorganic classification.
If imported as spent catalyst residue containing tetrabutyltin
Catalytic preparations containing organotin classified in 3815 as reaction accelerators.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify 99% purity documentation to confirm 2931 classification over mixtures
• Include Certificate of Analysis (CoA) showing tin-carbon bonding structure
• Comply with EPA organotin restrictions; some uses require SNUR notification
Related Products under HTS 2931.90.90.25
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.
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.