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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
๐Ÿ‡จ๐Ÿ‡ณChina3.7%+133.8%137.5%
๐Ÿ‡ฒ๐Ÿ‡ฝMexico3.7%+106.3%110%
๐Ÿ‡จ๐Ÿ‡ฆCanada3.7%+106.3%110%
๐Ÿ‡ฉ๐Ÿ‡ชGermanyFree+21.3%21.3%
๐Ÿ‡ฏ๐Ÿ‡ตJapanFree+23.8%23.8%

Alternative Classifications

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

2920.90Lower: 16.2% vs 137.5%

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?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code โ€” and can price the duty on it in the same conversation.

Import Tips & Compliance

โ€ข Specify application (e.g

โ€ข 'adhesion promoter') but maintain chemical compound focus for classification

โ€ข Hydrolyzable groups require stability data under Chapter 29 solvent notes