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
Rate breakdown
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