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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mixture exceeds chemically defined compound purity threshold
Impure mixtures fall to Chapter 38 as chemical preparations when not meeting Chapter 29 purity standards
If other specific toluidine sulfonic acids not named
Statistical suffix differentiation within 2921.43.90 for related but unnamed toluidine derivatives
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include COA showing impurity levels <2% to qualify as 'chemically defined' per Chapter 29 note (a)
• Label with GHS corrosive pictogram and specific CAS for customs verification
• Segregate from Chapter 32 dyes during import to prevent misclassification
Related Products 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.
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.