Fast Blue B2R Base
Fast Blue B2R Base diazonium salt produces brilliant blue azo dyes for acrylic fibers and inks. Falls under HTS 2927.00.40.00 as specified in additional U.S. note 3 for controlled dye intermediates. Contains permitted anticaking stabilizer per chapter note (f).
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.5% | +25.0% | 31.5% |
| 🇲🇽Mexico | 6.5% | — | 6.5% |
| 🇨🇦Canada | 6.5% | — | 6.5% |
| 🇩🇪Germany | 6.5% | — | 6.5% |
| 🇯🇵Japan | 6.5% | — | 6.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported with coupler as reactive dye intermediate set
Complete dye systems classify as synthetic organic coloring matter in 3204.
If decomposition products or amine precursors
Underlying aromatic amines classify separately if diazo group inactive.
Not sure which classification is right?
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Import Tips & Compliance
• Certify non-explosive formulation; diazonium salts require DOT hazardous material declaration
• Cross-reference with Color Index (C.I.) numbers for customs verification
• Bulk only; retail packs trigger chapter exclusion to 3212
Related Products under HTS 2927.00.40.00
Fast Red B Base Diazonium Salt
Fast Red B Base is a diazonium salt used as a diazo component in the production of azo dyes for textile and leather coloring. It falls under HTS 2927.00.40.00 as a product described in additional U.S. note 3 to section VI, which covers specific diazo- and azo-compounds regulated for dye manufacturing. This chemically defined organic compound reacts with couplers to form vibrant red dyes.
Fast Yellow GC Base Diazo Compound
Fast Yellow GC Base is a diazonium salt serving as a key intermediate for yellow azo pigments used in printing inks and paints. Classified under HTS 2927.00.40.00 due to its inclusion in additional U.S. note 3 for specific dye-coupling components. It meets chapter requirements as a separate chemically defined diazo-compound.
Salt 3B Diazonium Salt
Salt 3B is a stabilized diazonium salt used in coupling reactions for scarlet azo dyes applied to cotton fabrics. It qualifies for HTS 2927.00.40.00 as a product listed in additional U.S. note 3 to section VI for regulated dye intermediates. The compound contains necessary stabilizers for safe handling per chapter note (f).
Fast Scarlet B Base
Fast Scarlet B Base functions as a diazo component for producing scarlet shades in direct dyes for cellulosic fibers. This product is described in additional U.S. note 3, placing it in HTS 2927.00.40.00 within the diazo-/azo-compounds heading. It is a separate chemically defined compound suitable for industrial dye synthesis.
H Acid Coupling Component
H Acid (1-amino-8-naphthol-3,6-disulfonic acid) serves as an azo coupling agent for substantive dyes on cotton. Though primarily phenolic, its role in azo dye synthesis links it to products in additional U.S. note 3 under HTS 2927.00.40.00. This chemically defined compound is essential for dye chemistry per chapter scope.
J Acid Diazo Coupler
J Acid (2-amino-8-naphthol-6-sulfonic acid) is a critical coupler for azo dyes producing blue-violet shades on textiles. Included in additional U.S. note 3 products for HTS 2927.00.40.00 as part of diazo-/azo- chemistry intermediates. Meets chapter (a) as separate chemically defined organic compound.