Tolyltriazole Corrosion Inhibitor from Canada
Tolyltriazole (CAS 29385-43-1) is a heterocyclic nitrogen compound used primarily as a corrosion inhibitor in metalworking fluids and cooling systems. It forms a protective film on copper and brass surfaces, preventing oxidation and degradation. Classified under HTS 2933.99.82.20 as a specific aromatic heterocyclic compound with nitrogen hetero-atoms only.
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
• Provide CAS number 29385-43-1 and purity certificate on commercial invoice to confirm classification under 2933.99.82.20
• Include SDS and end-use statement specifying corrosion inhibition to avoid reclassification as a mixture under Chapter 38
• Verify TSCA registration for US entry; common pitfall is missing impurity declarations exceeding chapter note limits