Industrial Grade Thioglycolic Acid from Canada
Technical grade thioglycolic acid used in polymer synthesis and metal extraction, specifically classified under HTS 2930.90.4910. Meets Chapter 29 requirements as a separate chemically defined organo-sulfur acid with direct C-S bond.
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
• Include assay certificate showing ≥80% purity to distinguish from mixtures in 3824
• Label as UN 1940 Corrosive Liquid, pH <2; ensure DOT-compliant packaging
• Document end-use to prevent reclassification as hair waving preparation under 3305