2933.99.82.20 - Tolyltriazole (CAS No. 29385-43-1)

This HTS classification covers Tolyltriazole, identified by its CAS Number 29385-43-1. Within the broader category of heterocyclic compounds containing nitrogen heteroatoms, this subheading specifically pertains to "Other" aromatic or modified aromatic compounds that do not fall under more specific subheadings within this level of the tariff schedule. Tolyltriazole is a derivative of benzotriazole and is primarily utilized for its corrosion inhibition properties, particularly in industrial cooling water systems, automotive antifreeze, and metalworking fluids.

To distinguish this classification from its sibling, 2933.99.82.10, it's important to note that the latter specifically covers Benzotriazole itself. While related, Tolyltriazole represents a substituted analog of Benzotriazole. The "Other" designations at this level indicate that this subheading captures substances that fit the general criteria of heterocyclic aromatic compounds with nitrogen but are not explicitly listed elsewhere within the immediate hierarchical structure.

As this is a leaf node, there are no further subcategories within 2933.99.82.20. Therefore, classification under this code relies on identifying the product as Tolyltriazole and ensuring it does not qualify for a more specific classification further up or down the HTS tree. The primary classification criteria remain the chemical identity and its structural relationship to other compounds within Chapter 29, specifically focusing on its aromatic heterocyclic nature.