p-Toluidine-m-sulfonic acid (CAS No. 88-44-8)
Amine-function compounds > Aromatic monoamines and their derivatives; salts thereof: > Toluidines and their derivatives; salts thereof: > Other: > Other > p-Toluidine-m-sulfonic acid (CAS No. 88-44-8)
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Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Products classified under HTS 2921.43.90.40
p-Toluidine-m-sulfonic acid
p-Toluidine-m-sulfonic acid (CAS No. 88-44-8) is a chemically defined aromatic monoamine derivative with both amino and sulfonic acid functional groups, classified under HTS 2921.43.9040 as a toluidine derivative salt. It serves as a key intermediate in dye synthesis and pharmaceutical production.
p-Toluidine-m-sulfonic Acid Sodium Salt
The sodium salt form of p-Toluidine-m-sulfonic acid, a water-soluble aromatic amine sulfonate under HTS 2921.43.9040 per Chapter 29 salt classification rules. Used in azo dye coupling processes and as a chemical intermediate.
Technical Grade p-Toluidine-m-sulfonic Acid (98% Pure)
Technical grade p-Toluidine-m-sulfonic acid with 98% purity, containing minor impurities but meeting Chapter 29(a) definition for chemically defined organic compounds. Classified specifically under HTS 2921.43.9040 for industrial dye synthesis.
p-Toluidine-m-sulfonic Acid Aqueous Solution (50% w/v)
50% aqueous solution of p-Toluidine-m-sulfonic acid, classified under HTS 2921.43.9040 per Chapter 29 note (d) for chemically defined compounds dissolved in water. Used for safe transport in dye manufacturing.
p-Toluidine-m-sulfonic Acid with Stabilizer
p-Toluidine-m-sulfonic acid containing added stabilizer for preservation, classified under HTS 2921.43.9040 per Chapter 29 note (f). The stabilizer does not alter its principal chemical identity as toluidine derivative.