Fast Red Base B from China

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.

Duty Rate — China → United States

19%

Rate breakdown

9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter

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Import Tips

• Verify chemical purity and provide Certificate of Analysis (CoA) confirming it's a fast color base per Chapter 29 notes, not a finished dye (excluded under note 2(g))

• Include Safety Data Sheet (SDS) detailing amine-function composition to avoid misclassification as mixtures or Chapter 32 coloring matter

• Label shipments clearly as 'Fast Color Bases - For Dye Manufacturing Use Only' to prevent retail packing confusion with heading 3212