Hexamethylenediamine Sulfate from Canada
Sulfate salt of hexamethylenediamine used as a corrosion inhibitor intermediate and in water treatment chemicals. HTS 2921.22.5000 covers this as 'other' salts of the polyamine. Typically supplied as 50-70% aqueous solution.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Declare exact salt form and counterion ratio; customs may require titration analysis
• Provide end-use statement distinguishing from finished water treatment formulations
• Use corrosion-resistant packaging (HDPE drums) and include shelf-life stability data