3402.42.20.10 - Polyethers

This HTS subcategory, 3402.42.20.10, specifically covers polyethers that function as organic surface-active agents. Polyethers are a class of synthetic polymers characterized by repeating ether linkages in their chemical structure. When classified under this heading, these polyethers are utilized for their ability to reduce surface tension, making them effective in a variety of applications such as detergents, emulsifiers, wetting agents, and dispersants. Their classification here hinges on their role as active surface-active compounds, distinct from their use as mere chemical intermediates or building blocks for other materials.

This specific classification distinguishes polyethers from their sibling categories within the broader "Non-ionic: Other" group. For instance, it is differentiated from 3402.42.20.20, which covers esters and ether-esters derived from polyhydric alcohols, indicating a different chemical derivation and potentially distinct surface-active properties. Furthermore, it is separate from the residual category 3402.42.20.50, which would encompass other non-ionic organic surface-active agents not specifically defined elsewhere. The focus on "Polyethers" in this subcategory highlights the primary polymeric structure as the defining characteristic for classification.

As this is a leaf node within the HTS, there are no further subdivisions. Therefore, the classification of a product under 3402.42.20.10 depends on whether it is an organic surface-active agent and its primary chemical structure is that of a polyether, of animal, vegetable, or microbial origin (though this specific subcategory is more commonly associated with synthetic polyethers). Practical classification will involve verifying the chemical composition and the intended function as a surface-active agent.