3402.39.90.50 - Other

This HTS classification, 3402.39.90.50, covers "Other" anionic organic surface-active agents and preparations that do not fall under more specific subheadings within the broader category of anionic surface-active agents. It encompasses a diverse range of products whose primary function is to reduce surface tension, facilitating processes like wetting, emulsifying, dispersing, and foaming. These agents are crucial components in a vast array of industrial and consumer applications, including detergents, cleaners, and various chemical processes where their surface-active properties are leveraged.

This category is distinct from its siblings, 3402.39.90.10 (Salts of sulfated alcohols) and 3402.39.90.20 (Salts of sulfated polyethers), by its residual nature. While the sibling categories specifically capture anionic surface-active agents derived from sulfated alcohols and sulfated polyethers, this "Other" category is for all other anionic surface-active agents and preparations that do not meet the criteria for those more precisely defined classifications. Therefore, classification here relies on excluding products that have a more specific designation at the same level.

As this is a leaf node in the HTS structure, there are no further subcategories to introduce. The classification of goods under 3402.39.90.50 therefore depends on a thorough assessment against the scope of heading 3402 and specifically the requirements for anionic organic surface-active agents, ensuring that the product is indeed an anionic type and does not fit into any of the more granular classifications provided elsewhere in the tariff schedule.