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Vinyltriphenylsilane from Canada

An organosilicon compound with three phenyl groups and vinyl functionality bound to silicon, used in polymer chemistry. Falls under HTS 2931.90.30.00 as an aromatic organo-inorganic compound described in U.S. note 3 to section VI. Silicon-carbon bonds with aromatic substituents qualify it for chapter 29 classification.

Duty Rate — Canada → United States

16.5%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Provide elemental analysis confirming >50% aromatic content and Si-C bonding

Include REACH/SDS documentation for silicone intermediates; note flammability hazards

Avoid Chapter 39 classification by emphasizing monomeric chemical identity over polymer use