Dye Intermediate 2-Chloro-5-sulfo-4-methylaniline
Synonymous with 2-Chloro-p-toluidine-5-sulfonic acid (CAS 88-51-7), this aromatic amine-sulfonic acid is a building block for reactive dyes. Falls under HTS 2921.43.90.20 as a toluidine derivative per precise chemical structure.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for other aromatic monoamine derivatives
Broader 'other' monoamines if not specifically toluidine-based.
If post-coupling into pigment form
Finished synthetic pigments excluded from Chapter 29 per exclusion note (g).
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Import Tips & Compliance
• Declare as 'dye intermediate' with CAS reference to align with HTS; use ISF filing early for chemical imports
• Test for heavy metals to meet TSCA requirements
Related Products under HTS 2921.43.90.20
2-Chloro-p-toluidine-5-sulfonic acid
A chemically defined aromatic monoamine derivative featuring a toluidine base with chloro and sulfonic acid substituents, classified under HTS 2921.43.90.20 per CAS No. 88-51-7. It serves as a key intermediate in synthesizing azo dyes and pigments due to its reactive amine and sulfonic groups.
2-Chloro-p-toluidine-5-sulfonic acid Sodium Salt
The sodium salt form of 2-chloro-p-toluidine-5-sulfonic acid (CAS 88-51-7 base), a water-soluble aromatic amine derivative used in dye manufacturing. Classified specifically under HTS 2921.43.90.20 as the parent compound's salt per chapter notes on inorganic salts.
CAS 88-51-7 2-Chloro-4-methyl-6-sulfanilic acid
Alternative naming for 2-Chloro-p-toluidine-5-sulfonic acid (CAS 88-51-7), an aromatic toluidine derivative with sulfonic acid group for enhanced solubility in azo pigment production. Precisely matches HTS 2921.43.90.20 due to its chemical definition as a toluidine salt derivative.
2-Chloro-p-toluidine-5-sulfonic acid Technical Grade
Technical grade 2-Chloro-p-toluidine-5-sulfonic acid (CAS 88-51-7) with minor impurities, still qualifying as a separate chemically defined compound under Chapter 29 notes. Used in industrial dye synthesis, classified under the specific HTS 2921.43.90.20.