Sodium 1-Naphthol-4-Sulfonate
This is the sodium salt of 1-naphthol-4-sulfonic acid, classified as 'other' naphthols and their salts in HTS 2907.15.60.00 per chapter note 3(C)(1). It functions as a diazo dye coupling component in textile coloration.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified primarily by sulfonic acid function
Chapter note prioritizes amino-hydroxy-naphthalene sulfonic acids over simple naphthol salts.
If imported as disodium salt without organic emphasis
Inorganic salts of organic acids may shift if not following organic compound heading per note 3(C).
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Import Tips & Compliance
• Submit salt formation documentation proving classification follows the parent naphthol acid per chapter note 3(C)
• Verify no metal coordination bonds that would require classification under later headings
Related Products under HTS 2907.15.60.00
1-Naphthol
1-Naphthol is a monophenolic compound derived from naphthalene, classified under HTS 2907.15.60.00 as one of the 'other' naphthols and their salts. It is a chemically defined organic compound used primarily as an intermediate in dye synthesis and pharmaceutical production.
2-Naphthol
2-Naphthol, also known as β-naphthol, is a key monophenol in the naphthols category under HTS 2907.15.60.00. This separate chemically defined compound serves as a critical intermediate for azo dyes, antioxidants, and rubber chemicals.
1-Naphthol-3,6-Disulfonic Acid (H Acid precursor salt)
A disulfonic acid salt of 1-naphthol, captured in HTS 2907.15.60.00 'other' category for naphthols and salts. Intermediate for H-acid used in reactive dyes.
Martius Yellow Base (1-(2,4-Dinitrophenylazo)-2-Naphthol)
While technically an azo compound, pure Martius Yellow base retains naphthol classification under HTS 2907.15.60.00 when imported as chemical intermediate. Used in biological staining and pigment production.
Tobias Acid Sodium Salt (2-Naphthylamine-6-Sulfonic Acid precursor)
Sodium salt of naphthol sulfonic acid used in dye chemistry, classified under HTS 2907.15.60.00 'other naphthols.' Key for naphthol AS dye series.
2-Naphthol-6,8-Disulfonic Acid Disodium Salt (Schaeffer Salt)
Schaeffer salt is a disulfonated naphthol sodium salt under HTS 2907.15.60.00 as 'other' naphthols and salts. Used in azo dye production for textiles and leather.