4-Amino-6-chloro-m-benzenedisulfonamide and Methyl-4-aminobenzenesulfonylcarbamate (Asulam)
Sulfonamides: > Other: > 4-Amino-6-chloro-m-benzenedisulfonamide and Methyl-4-aminobenzenesulfonylcarbamate (Asulam)
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified 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.
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.