3824.99.75.10 - Naphthenic acids

This HTS category, 3824.99.75.10, specifically classifies naphthenic acids, their water-insoluble salts, and their esters. Naphthenic acids are a complex mixture of cyclic carboxylic acids derived from petroleum. This classification is relevant for import and export purposes, identifying these specific chemical compounds as distinct from other miscellaneous chemical products.

Within the broader "Other" subheadings of 3824.99, this category is distinguished by its precise focus on naphthenic acid derivatives. Its sibling category, 3824.99.75.50, covers all other miscellaneous chemical products not elsewhere specified or included, meaning this node carves out a specific niche for the named naphthenic acid compounds, ensuring they are not incorrectly classified under a general "other" designation.

As a leaf node in the HTS structure, 3824.99.75.10 does not have further subcategories. Therefore, classification under this code hinges on the presence and nature of naphthenic acids, their water-insoluble salts, or their esters. Typical applications of these substances include use as corrosion inhibitors, emulsifiers, lubricants, and in the production of paints and varnishes, which can be helpful in confirming the correct classification.