Tetra-n-propylthiuram Disulfide
Although primarily organo-sulfur, this thiuram accelerator contains tin impurities making it organo-inorganic under 2931 when tin-carbon bonds present. Falls under HTS 2931.90.90.29 as other organo-tin compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If no detectable tin-carbon bonds
Pure thiuram disulfides are organo-sulfur compounds under 2930; tin presence moves to 2931.
If sold as formulated rubber accelerator
Prepared rubber accelerators classified as mixtures in Chapter 38.
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Import Tips & Compliance
• Provide elemental analysis showing tin content >1% for 2931 classification justification
• Comply with OSHA 1910.1000 Table Z-1-A exposure limits for thiuram dust
• Avoid Chapter 38 if purity >95%; mixtures go to 3812.10 for rubber accelerators
Related Products under HTS 2931.90.90.29
Tributyltin Oxide
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.
Dibutyltin Dilaurate
Dibutyltin dilaurate is an organo-tin catalyst with tin-carbon bonds, used primarily as a catalyst in silicone and polyurethane production. It falls under HTS 2931.90.90.29 as other organo-tin compounds per Chapter 29 notes on direct metal-carbon linkages.
Dioctyltin Bis-(2-ethylhexylmercaptoacetate)
A non-toxic organo-tin heat stabilizer for PVC with direct tin-carbon linkages in octyl groups. HTS 2931.90.90.29 applies to this other organo-tin compound per chapter notes excluding only specifically named compounds.
Bis(tributyltin) Oxide
Biochemical reagent and antifouling agent with characteristic Sn-C bonds in tributyl groups. HTS 2931.90.90.29 covers this organo-tin compound excluded from specific subheadings.
Dimethyltin Dichloride
Organo-tin compound used as PVC stabilizer precursor with methyl groups directly bonded to tin. Classifies under HTS 2931.90.90.29 per Chapter 29 notes on organo-inorganic compounds.
Cyclic Trimethylenetricarboxylic Triamide Tin Complex
Specialty organo-tin complex for polymer catalysis with tin directly linked to carbon atoms. HTS 2931.90.90.29 applies as other organo-tin not specifically provided for.