2916.15.51.00 - Other

This HTS category, "Other," at the 2916.15.51.00 level, encompasses esters of oleic, linoleic, or linolenic acids that are not specifically classified elsewhere within the broader "Oleic, linoleic or linolenic acids, their salts and esters" heading. These are typically fatty acid esters derived from these unsaturated acyclic monocarboxylic acids, often used in industrial applications such as lubricants, plasticizers, surfactants, and as intermediates in the production of other chemicals. The classification hinges on the specific chemical structure of the ester and its composition, distinguishing it from the unesterified acids themselves.

Unlike the sibling category 2916.15.10.00, which covers the free oleic, linoleic, or linolenic acids, this category is specifically for their esterified forms. For instance, simple alkyl esters like methyl oleate or ethyl linoleate would fall under this classification if they are not further derivatized or specifically excluded. The "Other" designation signifies that this is a residual category for esters of these specific unsaturated fatty acids that do not fit into more granular subheadings that might exist for particular types of esters based on alcohol moiety or further chemical modification, should such distinctions be present at deeper levels of the HTS.

As this is a leaf node, there are no further subcategories. Classification within 2916.15.51.00 relies on confirming that the product is indeed an ester of oleic, linoleic, or linolenic acid and does not meet the description of any other subheading at a more granular level. The focus is on identifying the parent fatty acid structure and verifying the presence of an ester linkage.