Fast Black Base N from Japan
Fast Black Base N, derived from aromatic monoamines, serves as a diazo component for deep black shades in naphthol dyeing with excellent all-around fastness properties. Primarily used for denim and khaki fabrics. Classifies under HTS 2921.42.55.00 as an aniline derivative fast color base per Chapter 29 amine-function provisions.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide evidence of commercial identity as 'fast color base' through supplier catalogs and technical literature
• Salt forms classify with parent amine per Note 5(C)(1); confirm no coordination compounds triggering later headings
• Segregate from finished dye pastes to avoid Chapter 32 classification during customs examination