1521 - Vegetable waxes (other than triglycerides), beeswax, other insect waxes and spermaceti, whether or not refined or colored:

This HTS category, 1521, encompasses a specific group of waxes derived from non-triglyceride vegetable sources, as well as animal-derived waxes including beeswax, other insect waxes, and spermaceti. It is important to note that this classification excludes triglycerides, which are a distinct class of fats and oils. These waxes, whether in their crude or refined states, and regardless of whether they have been colored, fall under this heading for customs purposes.

When classifying within Section III, Chapter 15, it is crucial to distinguish this category from others. Unlike the live animal categories (e.g., 0101 through 0105) which deal with living organisms, or other chapters that might cover processed fats and oils, HTS 1521 focuses exclusively on specific types of solid, waxy substances. The primary differentiator here is the material source (vegetable, insect, or spermaceti) and the exclusion of triglycerides.

Within HTS 1521, further subdivisions provide more granular classification. The subheading 1521.10.00 specifically covers vegetable waxes, isolating these from the animal-derived waxes. The remaining waxes, such as beeswax, other insect waxes, and spermaceti, are grouped under the broader "Other" subheading 1521.90, allowing for precise identification based on their origin.