2920.19.40.00 - Other

This HTS category, "Other," under thiophosphoric esters and their derivatives, encompasses aromatic thiophosphoric esters and their salts that do not fall into more specific subheadings. These compounds are characterized by the presence of sulfur and phosphorus atoms in their ester linkages, specifically forming thiophosphate or dithiophosphate structures. The "aromatic" designation signifies that the organic portion of the ester is derived from aromatic compounds. Their applications are diverse, often found as insecticides and pesticides due to their specific chemical properties which target biological processes in pests.

This category is distinguished from its sibling, 2920.19.10.00, which specifically names O,O-Dimethyl-O-(4-nitro-m-tolyl)phosphorothioate (Fenitrothion). Therefore, this "Other" category includes all other aromatic thiophosphoric esters and their derivatives that are not Fenitrothion, even if they share similar chemical structures or uses. The distinction is based on the precise chemical identity of the compound.

As this is a leaf node, there are no further subcategories to introduce. Classification within this heading relies on the specific chemical structure and nomenclature of the aromatic thiophosphoric ester or its salt. If a particular aromatic thiophosphoric ester or its derivative is not explicitly listed elsewhere in the tariff schedule or in a more specific subheading under thiophosphoric esters, it will be classified here.