4-Hydroxybenzoic Acid from Canada
Para-hydroxybenzoic acid (PHB) is a phenolic carboxylic acid used as preservative intermediate and polymer monomer. HTS 2918.29.65.00 applies per additional U.S. note 3 to section VI for listed phenolic acids. Pure compound imported for chemical synthesis.
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 NMR or HPLC chromatograms confirming structure and isomeric purity per chapter note (b)
• Document end-use to distinguish polymer intermediate from food preservative use