Phenyltrichlorosilane Stabilized with Hexamethyldisiloxane from Canada
Phenyltrichlorosilane with added hexamethyldisiloxane stabilizer for moisture protection during transport, classified under HTS 2931.90.0500 per Chapter 29 note (f). The stabilizer is necessary for preservation without creating specific-use formulation.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document stabilizer as <1% and solely for transport per Chapter 29 note (f) requirements
• Monitor hydrolysis during import; test upon arrival to confirm compound integrity
• Avoid anti-dusting agents that trigger note (g) specific-use exclusion