Dibutyl Phosphite from Canada
Dibutyl phosphite is a reactive intermediate for flame retardants and adhesives. Classified under HTS 2920.29.00.00 as a dialkyl phosphite ester.
Duty Rate — Canada → United States
13.7%
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
• P-H acidity documentation distinguishes from neutral phosphite triesters
• Corrosivity test data required for steel drum packaging approval
• Avoid water contamination; hydrolysis products may change classification