Fast Blue Base BN from Japan

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.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter

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Import Tips

• 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