2813.90 - Other:

This HTS category, 2813.90, encompasses sulfides of nonmetals, excluding carbon disulfide. It specifically covers commercial phosphorus trisulfide and other chemical compounds where a nonmetal element is bonded with sulfur. This classification is relevant for trade in substances that are primarily used in various industrial applications, such as vulcanizing agents in the rubber industry, pesticides, or as intermediates in the synthesis of other chemical products.

Distinguishing this category from its sibling, 2813.10.00.00, is crucial. While both fall under the broader heading of "Sulfides of nonmetals; commercial phosphorus trisulfide," 2813.10.00.00 is exclusively for carbon disulfide, a distinct compound with its own unique properties and uses, often as a solvent. Therefore, 2813.90 is reserved for all other nonmetal sulfides not classified as carbon disulfide.

Within 2813.90, further subdivisions exist to refine the classification based on the specific nonmetal element involved. The subcategories are: 2813.90.10.00 for arsenic sulfides, 2813.90.20.00 for phosphorus sulfides (other than commercial phosphorus trisulfide which is part of the main heading), and 2813.90.50.00 for all remaining "Other" nonmetal sulfides not specifically itemized in the preceding subcategories. These subdivisions allow for a more precise identification and duty assessment of the diverse range of nonmetal sulfides entering international trade.