Benzenesulfonyl Hydrazide from Canada
Benzenesulfonyl hydrazide is a sulfonamide derivative explicitly named in HTS 2935.90.10.00, consisting of a benzene ring linked to a sulfonyl hydrazide group. Classified here as a specific organic compound of Chapter 29 rather than general organo-sulfur compounds. Widely used as a foaming agent in plastics and rubber production.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Include end-use statements distinguishing industrial chemical applications from pharmaceutical intermediates
• Verify CAS number (80-17-1) matches import documentation to confirm tariff-specific classification
• Check for anti-dumping duties; declare exact purity levels to avoid reclassification as mixtures