Vinyltriethoxysilane
Although silicones often classified elsewhere, vinyltriethoxysilane with Si-C vinyl bond qualifies as organo-inorganic under 2931.90.90 when imported as pure compound. Silane coupling agent for composites; chapter notes distinguish from polymers.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified by ethoxy nitrogen-function
Chapter note restricts oxygen functions; alkoxy silanes sometimes amine-classified.
If polymerized or as silicone fluid
Silicones/polysiloxanes universally classified in Chapter 39 plastics.
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Import Tips & Compliance
• Flammable liquid UN1993; distillation residue documentation often required
• Common misclassification to 3910 silicone oils—prove monomer status with GC analysis
• REACH Annex XVII restrictions apply to certain silanes
Related Products under HTS 2931.90.90
Tetraethyl Lead (TEL)
Tetraethyl lead is an organo-inorganic compound where lead atoms are directly linked to carbon in ethyl groups, used historically as an antiknock additive in gasoline. It falls under HTS 2931.90.90 as 'other organo-inorganic compounds' since it contains a metal (lead) directly bonded to carbon and doesn't fit specific subheadings. The chapter notes confirm classification in heading 2931 for such metal-carbon bonded compounds.
Trimethyl Bismuth
Trimethyl bismuth (Bi(CH3)3) is a volatile organobismuth compound with bismuth-carbon bonds, used in MOCVD semiconductor manufacturing. Classified under 2931.90.90 as other organo-inorganic compounds per chapter notes defining heading 2931 for metal-carbon linkages. Excluded from organosulfur (2930) or heterocyclic categories.
Triphenyl Antimony
Triphenyl antimony (SbPh3) features antimony-carbon bonds characteristic of organo-inorganic compounds in heading 2931. Used as a catalyst in PET resin production and flame retardant intermediate. Falls in 2931.90.90 as it doesn't match specific organo-inorganic subheadings.
Methylcyclopentadienyl Manganese Tricarbonyl
MCDC (methylcyclopentadienyl manganese tricarbonyl) is an organomanganese fuel additive with Mn-C bonds, qualifying as organo-inorganic under 2931.90.90. Used as MMT gasoline antiknock agent; chapter notes exclude it from hydrocarbon (Ch27) or inorganic metal (Ch28) classifications.
Tributyl Tin Chloride
Tributyltin chloride (Bu3SnCl) contains tin-carbon bonds defining organo-inorganic classification under heading 2931. Used as biocide intermediate and PVC stabilizer precursor. 2931.90.90 as other, since not specifically enumerated; chapter notes exclude halogenated organics without metal-carbon bonds.
Cyclopentadienyl Iron Dicarbonyl Dimer
This ferrocene derivative [(CpFe(CO)2)2] features iron-carbon bonds in cyclopentadienyl rings, qualifying as organo-inorganic under 2931.90.90. Used in specialty polymer catalysis; chapter note III(C) prioritizes latest numerical heading.