Naphthols and their salts
Phenols; phenol-alcohols. > Monophenols: > Naphthols and their salts > Naphthols and their salts
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2907.15.00
1-Naphthol
1-Naphthol is a monophenolic compound derived from naphthalene, classified under tariff item 2907.15.00 as a naphthol. It is a chemically defined organic compound used primarily as an intermediate in organic synthesis, meeting Chapter 29 note 1(a).
1-Naphthol-3,6-Disulfonic Acid (H Acid precursor salt)
1-Naphthol-3,6-Disulfonic Acid (H Acid precursor salt) is a disulfonic acid salt of 1-naphthol, captured under tariff item 2907.15.00 as a naphthol salt. It is an intermediate for H-acid used in reactive dyes, and meets Chapter 29 note 1(a) as a separate chemically defined compound.
1-Naphthol Technical Grade
1-Naphthol technical grade is a separate chemically defined organic compound (C10H7OH) that falls under tariff item 2907.15.00 as a monophenol naphthol. It is used as an intermediate for antioxidants, rubber chemicals, and pharmaceuticals, and qualifies under Chapter 29 note 1(a) as a chemically defined compound.
2-Naphthol
2-Naphthol, also known as β-naphthol, is a key monophenol in the naphthols category under tariff item 2907.15.00. This separate chemically defined compound serves as a critical intermediate for azo dyes, antioxidants, and rubber chemicals, meeting Chapter 29 note 1(a).
2-Naphthol-6,8-Disulfonic Acid Disodium Salt (Schaeffer Salt)
2-Naphthol-6,8-Disulfonic Acid Disodium Salt (Schaeffer Salt) is a disulfonated naphthol derivative presented as a sodium salt. It falls under tariff item 2907.15.00 as an 'other' naphthol salt, used primarily as an intermediate in azo dye production for textiles and leather. The sulfonic acid groups do not alter the fundamental naphthol classification.
CAS 90-15-3 α-Naphthol Powder
CAS 90-15-3 identified α-Naphthol powder falls under tariff item 2907.15.00 as a pure monophenol naphthol, used in pharmaceutical synthesis of beta-blockers and antiseptics. Its chemical purity ensures classification within Chapter 29 note 1(a) as a separate chemically defined compound.
Cosmetic Grade 2-Naphthol Powder
Ultra-pure β-Naphthol powder for use in cosmetic antioxidant formulations as a chemical intermediate remains under tariff item 2907.15.00 as a pure monophenol not excluded by end-use. It meets Chapter 29 note 1(a) as a separate chemically defined compound.
Dye Coupling Agent 2-Naphthol Crystals
Crystalline β-Naphthol functioning as a diazo dye coupler in textile coloration processes falls under tariff item 2907.15.00 per Chapter 29 for chemically defined phenols, prior to dye formation. It is a separate chemically defined compound under note 1(a).
High Purity 1-Hydroxynaphthalene
1-Hydroxynaphthalene (systematic name for α-Naphthol) at high purity is classified under tariff item 2907.15.00, a monophenol used in agrochemicals and as an analytical reagent. It meets Chapter 29 note 1(a) as a separate chemically defined phenol compound.
Industrial Grade 2-Naphthol Flakes
Industrial grade β-Naphthol in flake form serves as a key raw material for azo dye production and antioxidant synthesis. It is classified under tariff item 2907.15.00 as it meets Chapter 29 note 1(a) for separate chemically defined phenols.
Martius Yellow Base (1-(2,4-Dinitrophenylazo)-2-Naphthol)
Martius Yellow Base (1-(2,4-Dinitrophenylazo)-2-Naphthol) is an azo compound derived from 2-naphthol, retaining the naphthol core structure. It is classified under tariff item 2907.15.00 as a naphthol salt when imported as a chemical intermediate for biological staining or pigment production. The presence of the naphthol moiety governs its classification despite the azo functional group.
α-Naphthol (1-Naphthol)
α-Naphthol (1-Naphthol) is a chemically defined monophenol with the formula C10H7OH, classified under tariff item 2907.15.00 as a naphthol. It is used primarily as an intermediate in organic synthesis, including the production of dyes and pharmaceuticals, and meets Chapter 29 note 1(a) as a separate chemically defined compound.
β-Naphthol (2-Naphthol) Pure Chemical
β-Naphthol (2-Naphthol) is a chemically defined monophenol compound used primarily as an intermediate in organic synthesis for dyes and pharmaceuticals. It falls under tariff item 2907.15.00 as a naphthol, and meets Chapter 29 note 1(a) as a separate chemically defined compound.
α-Naphthol Flakes 99% Pure
High-purity α-Naphthol flakes (99%) are a monophenolic compound under tariff item 2907.15.00, used in manufacturing azo dyes and as a precursor for naphthol AS derivatives. This crystalline form meets Chapter 29 note 1(a) as a separate chemically defined compound, and the high purity ensures it is not a mixture of isomers.
α-Naphthol for Dye Synthesis
α-Naphthol specifically for dye synthesis is imported under tariff item 2907.15.00 as a pure naphthol intermediate, not as finished colouring matter. This monophenol is crucial for coupling reactions producing red azo dyes, and it qualifies under Chapter 29 note 1(a) as a separate chemically defined compound.
Pharmaceutical Intermediate β-Naphthol
High-purity β-Naphthol used as a building block in synthesizing pharmaceutical compounds like naphthol AS derivatives qualifies for tariff item 2907.15.00 as a pure monophenol under Chapter 29, excluding finished drugs. It is a separate chemically defined compound under note 1(a).
Sodium 1-Naphthol-4-Sulfonate
Sodium 1-Naphthol-4-Sulfonate is the sodium salt of 1-naphthol-4-sulfonic acid, classified under tariff item 2907.15.00 as a naphthol salt. It serves as a diazo dye coupling component in textile coloration, where its naphthol structure is essential for the coupling reaction. The salt form is covered by Chapter 29 Note 5(C)(1), which directs inorganic salts of organic compounds to the heading of the parent compound.
Stabilized β-Naphthol for Transport
β-Naphthol with added stabilizer to prevent oxidation during shipping remains a chemically defined compound under tariff item 2907.15.00. Chapter 29 note 1(f) allows classification in this heading with added stabilizers necessary for preservation or transport.
Tobias Acid Sodium Salt (2-Naphthylamine-6-Sulfonic Acid precursor)
Tobias Acid Sodium Salt, a sodium salt of a naphthol sulfonic acid used as a precursor in dye chemistry, is classified under tariff item 2907.15.00 as an 'other' naphthol salt. It is a key intermediate for the naphthol AS dye series, where the naphthol ring system is retained. The product's classification follows Chapter 29 Note 5(C)(1) for inorganic salts of organic compounds.