Tolyltriazole Flake Form TTA-99 from Canada
Tolyltriazole flakes (TTA-99, CAS 29385-43-1) designed for easy dissolution in industrial formulations. Used extensively in closed-loop cooling water systems to protect copper alloys. Falls under HTS 2933.99.82.20 as the specific tolyltriazole compound with permitted stabilizer per chapter note (f).
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% 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
• Document stabilizer type and concentration (<2%) to qualify under chapter note (f) for pure compound status
• Use UN-approved packaging for corrosive solid; improper packaging causes common entry delays
• Provide downstream handler certifications to demonstrate legitimate industrial chemical use