9902.06.62 - 1,3,5-Tris(2-hydroxyethyl)-1,3,5-triazinane-2,4,6-trione (THEIC) (CAS No. 839-90-7) (provided for in subheading 2933.69.60)

This HTS category, 9902.06.62, specifically covers 1,3,5-Tris(2-hydroxyethyl)-1,3,5-triazinane-2,4,6-trione, also known by its acronym THEIC and identified by CAS Number 839-90-7. This chemical compound is primarily utilized in the manufacturing of various polymer systems, particularly as a crosslinking agent in coatings, inks, and adhesives, to enhance their durability, chemical resistance, and thermal stability. Its inclusion within Chapter 99 signifies that it falls under temporary legislation or special provisions, often related to trade agreements or specific import restrictions, and is provided for under subheading 2933.69.60 as a heterocyclic compound.

Given that this is a leaf node, there are no further subcategories within this specific HTS code. Therefore, the focus shifts to understanding the precise nature of THEIC itself and its distinct classification. While other HTS codes within Chapter 99 might address temporary measures for different categories of goods, this entry is singular in its focus on this particular chemical compound and its associated special classification. Distinguishing it from siblings at this high level of Chapter 99 involves recognizing that each entry within this chapter pertains to a unique set of temporary legislative or restrictive measures, rather than broad commodity classifications found in earlier chapters. The core classification criterion for this entry is the chemical identity and CAS number of THEIC, coupled with its designated placement under special provisions.