Pharmaceutical Grade Thioglycolic Acid USP from Canada
Ultra-pure thioglycolic acid meeting USP standards for pharmaceutical intermediates, classified under HTS 2930.90.4910. Qualifies as chemically defined organo-sulfur acid per Chapter 29 scope.
Duty Rate — Canada → United States
100%
Rate breakdown
9903.04.6095.8%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
• Submit Drug Master File (DMF) and USP certificate; comply with FDA import alert 99-30
• Endotoxin and heavy metals testing required for pharma grade; maintain <10ppm lead
• Segregate from cosmetic shipments to avoid contamination cross-alerts