Tolyltriazole Corrosion Inhibitor from Japan
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 — Japan → United States
15%
Rate breakdown
9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
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