2918.29.25.00 - 3-Hydroxy-2-naphthoic acid

This HTS category, 2918.29.25.00, specifically covers 3-Hydroxy-2-naphthoic acid. This compound is a carboxylic acid with a phenolic hydroxyl group attached to a naphthalene ring system. Its classification within Chapter 29 signifies its status as an organic chemical, and more precisely, a derivative of naphthalene that possesses both a carboxyl and a hydroxyl functional group.

This specific entry distinguishes 3-Hydroxy-2-naphthoic acid from its sibling categories, which encompass a broader range of carboxylic acids with phenolic functions. For instance, other entries in the 2918.29 subheadings include various cresotic acids, benzoic acid derivatives (like m- and p-hydroxybenzoic acid), and other naphthoic acid isomers such as 1-hydroxy-2-naphthoic acid. The defining characteristic for this particular code is the precise positional isomerism of the hydroxyl and carboxyl groups on the naphthalene skeleton.

As this is a leaf node in the HTS classification, there are no further subdivisions. Classification at this level is therefore dependent on the exact chemical identity of the imported or exported substance, with 3-Hydroxy-2-naphthoic acid being uniquely identified by its chemical structure and name.