4-(N-Ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine Sesquisulfate Monohydrate
Known as CD-3, this is the primary color developer for modern C-41 color negative processing. The sesquisulfate salt form provides optimal pH stability for high-volume photo labs. As an aromatic heterocyclic photographic chemical, it falls under HTS 2933.99.24.00.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If industrial antioxidant use
Phenylenediamine derivatives outside photographic chemicals classify as carboxamide-function compounds.
If incomplete salt characterization
Improper salt documentation may result in classification as inorganic borates or similar.
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Import Tips & Compliance
• Specify exact hydrate and salt stoichiometry; provide pH stability data; comply with sesquisulfate import specifications for consistent classification
Related Products under HTS 2933.99.24.00
4-Methyl-1-phenyl-2-pyrazolin-5-one
This aromatic heterocyclic compound with nitrogen hetero-atoms serves as a key photographic chemical used in color film development processes. It functions as a developing agent in the formation of magenta dye images during photographic processing. Classified under HTS 2933.99.24.00 due to its specific use in photography and aromatic heterocyclic structure.
1-Phenyl-3-pyrazolidinone (Phenidone)
Phenidone is a pyrazolidinone derivative used as a superadditive developing agent in black-and-white photographic films and papers. This aromatic nitrogen-heterocycle enhances development speed when combined with other agents. It qualifies for HTS 2933.99.24.00 as a specialized photographic chemical.
3-Methyl-1-p-sulfophenyl-5-pyrazolone
A sulfonic acid derivative of pyrazolone used as a coupler in color photographic development to produce yellow dye images. This aromatic heterocyclic compound with nitrogen hetero-atoms is essential for multilayer color film processing. Its photographic specificity places it under HTS 2933.99.24.00.
2-Amino-5-diethylaminotoluene Hydrochloride
This aromatic amine serves as a color developer in photographic processing, particularly for dye diffusion transfer processes. The hydrochloride salt form maintains stability for industrial use in imaging chemistry. Classified as a photographic chemical under HTS 2933.99.24.00 per Chapter 29 salt classification rules.
N-(2-Cyanoethyl)-N-ethyl-p-toluidine
A cyanoethylated aromatic amine used as a developer in instant color photography systems. This nitrogen-heterocycle derivative participates in dye release mechanisms during image formation. Its specific photographic application qualifies it for HTS 2933.99.24.00.
5-Nitrobenzimidazole
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