Fast Blue Base BN
Fast Blue Base BN is a diazotizable aniline derivative salt serving as a fast color base for naphthol coupling in ice dye processes. It produces navy blue shades with excellent wash and light fastness on cellulosic fibers. Falls under HTS 2921.42.55.00 due to its aromatic amine-function structure optimized for stable azoic color development.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for use as synthetic dye component in finished preparation
If supplied ready for dyeing application rather than as pure chemical intermediate, moves to Chapter 32 synthetic organic dyes.
If other aromatic monoamine derivatives not specifically fast color bases
Aniline derivatives without specialized dyeing function use the residual 'other' subheading within the same amine-function group.
If containing heterocyclic ring structures beyond simple aniline
More complex quaternary ammonium or heterocyclic amine derivatives shift to later Chapter 29 headings per numerical order rule.
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Import Tips & Compliance
• Provide technical data sheets proving diazotization capability and naphthol compatibility to confirm fast color base status under Chapter 29 amine compounds
• Ensure packaging prevents moisture absorption, as stabilized forms with anticaking agents remain classified here per Chapter Note 2(f)
• Avoid bulk aqueous solutions exceeding safety/transport standards, which could reclassify under Note 2(e) solvent provisions
Related Products under HTS 2921.42.55.00
Fast Red Base B
Fast Red Base B is an aniline-derived aromatic monoamine salt specifically formulated as a fast color base for azoic dyeing processes. It couples with naphthol AS to produce brilliant, lightfast red shades on cotton and viscose fabrics. Classified under HTS 2921.42.55.00 as a derivative of aniline used primarily in dye manufacturing for its amine-function chemistry.
Fast Yellow Base GC
Fast Yellow Base GC, an aniline-based fast color base, diazotizes rapidly for coupling with naphthol AS to yield bright, fast yellow-orange shades on textiles. Its salt form ensures stability during transport and processing. HTS 2921.42.55.00 classification reflects its role as an aromatic monoamine derivative for colorfast azoic dyeing.
Fast Scarlet Base B
Fast Scarlet Base B is a specialized aniline salt fast color base that produces scarlet red hues when coupled with beta-naphthol in azoic dyeing systems. It offers superior alkali and chlorine fastness for workwear fabrics. As a pure aromatic monoamine derivative, it properly falls under HTS 2921.42.55.00.
Fast Black Base N
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.