Fast Red Base B from Japan
Fast Red Base B is an aromatic cyclic amide derivative used as a diazo component in the production of azo dyes with excellent color fastness on textiles. It falls under HTS 2924.29.52.00 as a fast color base, being a chemically defined carboxyamide-function compound designed for dye coupling reactions. These bases ensure vibrant, lightfast red shades in printing and dyeing applications.
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
Import Tips
• Verify purity certificates to confirm chemical identity as per chapter notes; ensure SDS includes GHS hazard classifications for amide compounds
• Common pitfall: mislabeling as finished dye leads to reclassification under Chapter 32