1515.90 - Other:

This HTS classification covers fixed vegetable or microbial fats and oils, along with their fractions, that have not undergone chemical modification. This broad category encompasses a wide range of oils and fats derived from sources not specifically itemized in preceding headings within Chapter 15. The key characteristic is that these substances are in their natural state or have undergone physical refinement processes such as filtering or deodorizing, but their chemical structure remains unaltered.

It is crucial to distinguish this "Other" category from its siblings which explicitly identify specific oils. For instance, it does not include linseed oil, corn (maize) oil, castor oil, or sesame oil, as these have their own dedicated subheadings. Similarly, microbial fats and oils, when specifically identified as such, are classified elsewhere. This heading serves as a catch-all for fixed vegetable and microbial fats and oils that do not fit into more narrowly defined categories.

Within this classification, further subdivisions exist to provide more granular detail. The subcategory "Nut oils" captures fixed vegetable fats and oils derived from nuts, differentiating them from other vegetable sources. "Jojoba oil and its fractions" is a specific designation for this unique plant-based oil. Finally, the "Other" subheading at this level acts as a residual category for any remaining fixed vegetable or microbial fats and oils, and their fractions, that are not otherwise specified within the HTS.