4-Amino-6-chloro-m-benzenedisulfonamide Technical Grade
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primary function considered heterocyclic despite sulfonamide dominance
Chapter 29 note prioritizes last occurring heading; heterocyclic compounds (2933) precede sulfonamides (2935).
If technical material with >5% unidentified impurities
Mixtures not qualifying as separate compounds under Chapter 29(a) classify as chemical preparations.
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Import Tips & Compliance
• 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
Related Products under HTS 2935.90.06.00
4-Amino-6-chloro-m-benzenedisulfonamide
This is a specific sulfonamide compound classified under HTS 2935.90.06.00 as a chemically defined organic compound containing sulfonamide groups. It is primarily used as an intermediate in pharmaceutical synthesis for carbonic anhydrase inhibitors and in agricultural chemical production. The product falls under Chapter 29 heading 2935 for sulfonamides other than those of subheading 2935.10.
Asulam (Methyl-4-aminobenzenesulfonylcarbamate)
Asulam is a sulfonamide herbicide (Methyl-4-aminobenzenesulfonylcarbamate) specifically named in HTS 2935.90.06.00 as a pure chemical compound. Used for broadleaf weed control in cereals and turf, it functions by inhibiting cellulose biosynthesis in plants. Classification under heading 2935 reflects its sulfonamide chemical structure per Chapter 29 notes.
Asulam Sodium Salt
The sodium salt form of Methyl-4-aminobenzenesulfonylcarbamate (Asulam sodium salt) remains classified under HTS 2935.90.06.00 per Chapter 29 note 3(C)(1). Inorganic salts of sulfonamide compounds follow the classification of the parent organic compound. Used interchangeably with Asulam in herbicide applications requiring water solubility.
Asulam Stabilized with Anticaking Agent
Asulam powder stabilized with silica anticaking agent (<1%) falls under HTS 2935.90.06.00 per Chapter 29 note (f) allowing stabilizers necessary for preservation/transport. Prevents clumping in herbicide manufacturing processes.