</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%+25.0%28.7%
🇲🇽Mexico3.7%3.7%
🇨🇦Canada3.7%3.7%
🇩🇪Germany3.7%3.7%
🇯🇵Japan3.7%3.7%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2920.90Lower: 13.7% vs 28.7%

If oxygen-function compound classification

Silane esters could classify under later oxygen-function headings per Chapter note 3(A).

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Specify application (e.g

'adhesion promoter') but maintain chemical compound focus for classification

Hydrolyzable groups require stability data under Chapter 29 solvent notes