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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing nitrogen heterocyclic ring
Sulfonamides with heterocyclic structure fall under 2935.90.75 rather than the specific 2935.90.06.00 listing.
If imported as formulated mixture or technical grade with impurities
Chemical mixtures not meeting Chapter 29 purity criteria for separate compounds classify as 'other chemical preparations'.
If classified as its sodium salt form
Inorganic salts of organic compounds follow the organic acid parent under Chapter 29 note 3(A), but specific salt forms may use 2942.
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Import Tips & Compliance
• Provide detailed chemical analysis (NMR, HPLC) certificates confirming identity as 4-Amino-6-chloro-m-benzenedisulfonamide to match exact HTS specification
• Include Safety Data Sheets (SDS) and confirm <99% purity to avoid pharmaceutical finished product classification under Chapter 30
• Declare intended use as chemical intermediate; mixtures exceeding Chapter 29 notes may shift to heading 3824
Related Products under HTS 2935.90.06.00
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.
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.
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.