Chlorotrimethylsilane
Chlorotrimethylsilane (TMSCl, (CH3)3SiCl) serves as a protecting group in organic synthesis. This organo-silicon compound with direct C-Si bonds is properly classified under HTS 2931.90.90.10 per Chapter 29 organo-inorganic provisions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as inorganic chloride
If silicon-chlorine emphasized over methyl groups, may incorrectly fall under Chapter 28 halides.
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Import Tips & Compliance
• ,Include GC/MS purity certificate; impurities >5% may trigger mixture classification
• Watch for stabilizer additions—must be for preservation/transport per note (f)
Related Products under HTS 2931.90.90.10
Dimethyldichlorosilane
Dimethyldichlorosilane is a chemically defined organo-silicon compound with the formula (CH3)2SiCl2, used primarily as a precursor in silicone polymer production. It falls under HTS 2931.90.90.10 as an organo-inorganic compound where silicon is directly linked to carbon atoms, fitting Chapter 29's scope for separate organic compounds containing nonmetals like silicon.
Trimethylchlorosilane
Trimethylchlorosilane ((CH3)3SiCl) is a volatile organo-silicon reagent used in silylation reactions and silicone synthesis. Classified under HTS 2931.90.90.10 as it meets the definition of organo-inorganic compounds with silicon directly bonded to carbon, excluded from sulfonated/halogenated derivatives.
Vinyltrimethoxysilane
Vinyltrimethoxysilane (CH2=CHSi(OCH3)3) is a coupling agent used in composite materials and adhesives. As a chemically defined organo-silicon compound, it belongs to HTS 2931.90.90.10.
Diphenyldichlorosilane
Diphenyldichlorosilane ((C6H5)2SiCl2) is used in high-temperature silicone resin production. This aryl organo-silicon compound fits HTS 2931.90.90.10 criteria.
Methyltrichlorosilane
Methyltrichlorosilane (CH3SiCl3) is a basic silicone monomer. Classified under HTS 2931.90.90.10 as organo-silicon.
Triethoxysilane
Triethoxysilane (HSi(OC2H5)3) used in silane chemistry. HTS 2931.90.90.10 organo-silicon compound.