Fast Violet Base 3B
Fast Violet Base 3B is a chemically pure aromatic cyclic carbamate used as a diazo base for violet-fast azo colorants in leather dyeing. HTS 2924.29.52.00 covers it as a fast color base amide-function compound.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If vat or sulfur dyes from this base
Sulfur/vat colorants specifically excluded to Chapter 32.
If nucleic acid derivatives if biotech-modified
Subchapter exclusions for certain heterocyclic derivatives.
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Import Tips & Compliance
• Include chromatograms proving single isomer per note (b); GOTS certification if organic textile chain
• Common issue: salt forms misclassified under note (C)
Related Products under HTS 2924.29.52.00
Fast Red Base B
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.
Fast Blue Base RS
Fast Blue Base RS is a synthetic aromatic amide serving as a color base for producing fast blue azo dyes on cotton and wool fabrics. Classified under HTS 2924.29.52.00 due to its cyclic amide structure and role in dye synthesis as per chapter notes on carboxyamide compounds. It provides superior wash and light fastness in industrial dyeing processes.
Fast Yellow Base GD
Fast Yellow Base GD, an aromatic cyclic carbamate derivative, acts as a fast color base for azo yellow dyes with high crocking resistance. It qualifies for HTS 2924.29.52.00 as a derivative of cyclic amides used solely in dye production, aligning with chapter definitions excluding finished colorants.
Fast Scarlet Base GN
Fast Scarlet Base GN is a chemically defined aromatic amide fast color base for scarlet azo pigments in printing inks and textiles. Under HTS 2924.29.52.00 for its cyclic amide-function and exclusion from Chapter 32 as it's not a finished coloring matter.
Fast Black Base N
Fast Black Base N, a derivative of cyclic carbamates, functions as a diazonium salt precursor for black azo dyes with superior fastness properties. HTS 2924.29.52.00 applies as an aromatic fast color base per chapter's carboxyamide provisions.
Fast Orange Base 2G
Fast Orange Base 2G is an aromatic cyclic amide used exclusively as a fast color base in azo dye manufacturing for brilliant orange shades. It meets HTS 2924.29.52.00 criteria as a separate chemically defined compound without Chapter 32 exclusions.