3402.39.90.20 - Salts of sulfated polyethers

This HTS classification covers salts derived from sulfated polyethers. Polyethers are polymers containing ether linkages in their main chain, and when these are sulfated, they gain anionic surface-active properties. The "salts" designation indicates that these sulfated polyethers are typically neutralized with a cation, such as sodium, potassium, or ammonium. These compounds are utilized as surfactants in various industrial applications, including detergents, emulsifiers, and wetting agents.

Distinguishing this category from its sibling, 3402.39.90.10 (Salts of sulfated alcohols), is crucial. While both are anionic surfactants, the former specifically pertains to those derived from polyether structures, whereas the sibling category is for surfactants originating from the sulfation of alcohols. The "other" designation within this subcategory signifies that it encompasses salts of sulfated polyethers that do not fit into any more specific sub-classifications.

As a leaf node, this HTS code does not have further subcategories. Therefore, classification under 3402.39.90.20 relies on accurately identifying the chemical structure of the substance as a salt of a sulfated polyether, ensuring it is not otherwise specifically enumerated or excluded by more general or specific tariff provisions.