2918.30.30.00 - Other

This HTS category, 2918.30.30.00, encompasses aromatic carboxylic acids that possess an aldehyde or ketone functional group, but notably lack any other oxygen-containing functional group. This exclusion of additional oxygen functions is a critical definitional element. Within this subgroup of aromatic carboxylic acids with aldehyde or ketone functions, this specific classification serves as a residual category for those not otherwise specified.

It is important to distinguish this classification from its sibling category, 2918.30.25.00. The sibling specifically designates products that are described within additional U.S. note 3 to section VI of the HTS. Therefore, 2918.30.30.00 covers all other aromatic carboxylic acids with aldehyde or ketone functions (and without other oxygen functions) that do not meet the specific criteria outlined in that additional U.S. note.

As this is a leaf node in the HTS classification structure, there are no further subcategories to introduce. Classification under 2918.30.30.00 relies on the precise chemical structure of the substance, specifically the presence of both an aromatic ring, a carboxylic acid group, and either an aldehyde or ketone group, while strictly excluding any other oxygen-containing functional groups. Examples may include aromatic aldehydes or ketones that also incorporate a carboxylic acid moiety.