3-Hydroxy-2-Naphthoic Acid
3-Hydroxy-2-naphthoic acid is a chemically defined organic compound with a carboxylic acid group and a phenolic hydroxy group on a naphthalene ring, falling under HTS 2918.29.2500 as specified. It serves as a key intermediate in organic synthesis, particularly for azo dye production and pharmaceutical precursors.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as 2-naphthol-3-carboxylic acid variant
Synonyms or slight naming differences may align with other phenolic carboxylic acids in the same subheading.
If formulated as synthetic dye intermediate for retail
Processed forms used directly as azo dye couplers shift to Chapter 32 synthetic coloring matter.
If diluted in solvents for specific industrial application
Solutions not solely for safety/transport become chemical preparations outside pure Chapter 29 scope.
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Import Tips & Compliance
• Verify purity certificate to confirm it meets chemically defined compound criteria under Chapter 29 notes; ensure no added solvents beyond transport allowances
• Provide detailed chemical analysis for CBP review to avoid misclassification as mixtures
Related Products under HTS 2918.29.25.00
3-Hydroxy-2-Naphthoic Acid Technical Grade
Technical grade 3-hydroxy-2-naphthoic acid contains minor impurities but remains a separate chemically defined organic compound per Chapter 29 note (a), classified under HTS 2918.29.2500. It is widely used in textile dye coupling and agrochemical synthesis.
2-Naphthol-3-Carboxylic Acid Powder
Also known as 2-naphthol-3-carboxylic acid, this powdered form is explicitly 3-hydroxy-2-naphthoic acid under HTS 2918.29.2500 due to its carboxylic acid with phenol function. It functions as a coupler in the manufacture of acid dyes for textiles.
3-Hydroxy-2-Naphthoic Acid Flake Form
Flake-form 3-hydroxy-2-naphthoic acid is the specified compound of HTS 2918.29.2500, a carboxylic acid with phenol function used in pigment and pharmaceutical intermediate production. Its physical form does not affect chemical classification under Chapter 29.
Beta-Naphthol-3-Carboxylic Acid
Beta-naphthol-3-carboxylic acid is synonymous with 3-hydroxy-2-naphthoic acid, directly matching HTS 2918.29.2500 for carboxylic acids with phenol function. It is essential for synthesizing naphthol AS dyes in the textile industry.
3-Hydroxy-2-Naphthoic Acid Stabilized
Stabilized 3-hydroxy-2-naphthoic acid includes necessary anticaking agents for preservation, permitted under Chapter 29 note (f) and classified in HTS 2918.29.2500. Used primarily in dye manufacturing and as a pharmaceutical building block.
2-Carboxy-3-Naphthol
2-Carboxy-3-naphthol is the IUPAC name for 3-hydroxy-2-naphthoic acid, fitting HTS 2918.29.2500 as a phenolic carboxylic acid. It acts as a critical coupler in fast dye production for cotton and wool textiles.