2917.19.27.00 - Other

This HTS category, 2917.19.27.00, encompasses "Other" acyclic polycarboxylic acids and their derivatives that are not specifically enumerated elsewhere within subheading 2917.19. The primary focus here is on compounds that fit the broad definition of acyclic polycarboxylic acids but do not fall under more narrowly defined subcategories. This includes a range of substances characterized by the presence of two or more carboxyl groups (-COOH) attached to an acyclic carbon chain, along with their corresponding anhydrides, halides, peroxides, and peroxyacids.

The key distinction for this category lies in its residual nature. Unlike the sibling category 2917.19.23.00, which specifically covers Maleic acid, this "Other" designation applies to all other acyclic polycarboxylic acids and their derivatives that meet the general criteria but are not Maleic acid itself. Therefore, classification into 2917.19.27.00 is determined by the absence of a more specific HTS classification for the particular acyclic polycarboxylic acid or its derivative in question.

As this is a leaf node within the HTS classification structure, there are no further subcategories. Classification within 2917.19.27.00 is therefore final for the described goods. This means that once a substance is identified as an acyclic polycarboxylic acid or its derivative and is not specifically listed under other more precise headings or subheadings within Chapter 29, it will be classified under this residual "Other" category. Examples could include certain substituted succinic acids or glutaric acids not derived from the specified precursors, or other acyclic polycarboxylic acid derivatives with unique structural features.