4-Amino-6-chloro-m-benzenedisulfonamide Technical Grade from China
Technical grade 4-Amino-6-chloro-m-benzenedisulfonamide (95-98% purity) qualifies under HTS 2935.90.06.00 as the named sulfonamide compound per Chapter 29 scope for compounds 'whether or not containing impurities'. Used in synthesis of diuretics and bactericides.
Duty Rate — China → United States
112.5%
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
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Purity certificate (HPLC) showing >95% named compound essential; lower purity risks reclassification as 3824 mixture
• Declare as 'chemical intermediate' not 'active pharmaceutical ingredient' to avoid Chapter 30 scrutiny
• Hazardous material shipping papers required (UN number if applicable); DOT classification impacts transport costs