Pharmaceutical Grade Sulfamic Acid from Canada
High-purity sulfamic acid meeting USP standards for use as a pharmaceutical intermediate and stabilizer in drug formulations. It is classified in HTS 2811.19.61.10 because it is a chemically defined inorganic acid of nonmetals, not covered by other specific headings or Chapter exclusions. Primarily imported for API synthesis.
Duty Rate — Canada → United States
14.2%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide USP/EP certificates of analysis to prove pharmaceutical purity and avoid reclassification as technical grade
• Comply with FDA prior notice requirements if destined for pharma use; include end-use statements