3-Methyl-1-p-sulophenyl-5-pyrazolone
Sulfonated pyrazolone used in color photographic coupler chemistry and dye synthesis. The aromatic-modified pyrazole ring structure fits HTS 2933.19.30.95 specifications for photographic chemicals.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as organo-sulfur compound
Sulfonated derivatives may classify under heading 2930 if sulfur function predominates.
If when supplied as dye coupler for textile applications
Application-specific formulations shift to synthetic coloring matter classification.
If as salts of double metal salts
Coordination compounds with metals classify per Chapter 28 metal compound rules.
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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 sulfonation degree certificates as modified aromatic status affects subheading
• Provide batch purity analysis to distinguish from dye intermediates under Chapter 32
• Ensure wastewater treatment documentation for handling sulfonated compounds
Related Products under HTS 2933.19.30.95
1-Phenyl-3-methyl-5-pyrazolone
A pyrazole derivative used as a key intermediate in the synthesis of photographic developers and dyes. This aromatic heterocyclic compound contains an unfused pyrazolone ring structure, qualifying it under HTS 2933.19.30 for photographic chemicals with pyrazole rings.
4-Amino-1-phenyl-3-pyrazolidinone
Pyrazolidinone derivative serving as a developing agent in black-and-white photographic processing. Its unfused pyrazole ring and aromatic substitution place it specifically under HTS 2933.19.30.95 for photographic chemicals.
1-(2,4,6-Trichlorophenyl)-5-pyrazolone-3-carboxylic Acid
Chlorinated aromatic pyrazolone carboxylic acid used in specialty photographic sensitizers. Falls under HTS 2933.19.30.95 due to unfused pyrazole ring and photographic chemical designation.
Ethyl 5-oxo-1-phenyl-1H-pyrazole-3-carboxylate
Pyrazole carboxylate ester intermediate for photographic dye-formers and developers. The unfused pyrazole ring with aromatic modification qualifies under HTS 2933.19.30.95.