1-(2,4-Diamino-5-methylphenylazo)-2-naphthol-7-sulfonic Acid from Japan
A complex azo coupler used in photographic color development for magenta dye formation, featuring aromatic heterocyclic components. This compound participates in chromogenic reactions specific to silver halide photography. Its photographic chemical role justifies HTS 2933.99.24.00 classification.
Duty Rate — Japan → United States
15%
Rate breakdown
9903.04.628.5%Pharmaceuticals: patented pharma from JP/EU/KR/CH/LI — 15% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Complex structure requires detailed NMR/structural analysis; declare as sulfonated azo compound; ensure wastewater permits for sulfonic acid disposal