Hexamethylenediamine Sulfate from China
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 — China → United States
44%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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