2842.90 - Other:

HTS code 2842.90, categorized under "Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides," encompasses a broad range of inorganic chemical compounds that do not fall into more specific classifications within heading 28.42. This category is distinct from its sibling, 2842.10, which specifically covers double or complex silicates, including aluminosilicates. Therefore, 2842.90 applies to inorganic salts and peroxoacids that are not silicates or aluminosilicates.

The subcategories within 2842.90 are designed to further refine the classification of these diverse compounds. The primary subdivision is 2842.90.10.00, which is dedicated to fulminates, cyanates, and thiocyanates. These are specific types of salts known for their distinct chemical structures and common industrial applications. Any remaining inorganic salts or peroxoacids that do not fit the criteria for double or complex silicates (2842.10) nor the specific salts listed in 2842.90.10.00 will be classified under the residual subcategory, 2842.90.90. This hierarchical structure ensures that even complex or less commonly encountered inorganic compounds can be accurately classified within the HTS system.