Imidazole Corrosion Inhibitor Base from Canada
Technical-grade Imidazole used as base for copper corrosion inhibitors in industrial coolants, under HTS 2933.29.60.00 for unfused ring structure. Forms complexes with metal surfaces.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.60100%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
• Avoid anti-dusting agents per chapter note (g) to prevent preparation classification; TSCA notification required; test for stabilizer content