2933.99.24.00/4-(N-Ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine Sesquisulfate Monohydrate/China
4-(N-Ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine Sesquisulfate Monohydrate from China
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.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Specify exact hydrate and salt stoichiometry; provide pH stability data; comply with sesquisulfate import specifications for consistent classification