3804.00.50.00 - Other

This HTS category, 3804.00.50.00, encompasses "Other" residual products derived from the manufacture of wood pulp, which are not specifically classified under subheading 3804.00.10.00. This broad category includes a variety of residues, such as spent sulfite liquors that have undergone concentration, desugaring, or chemical treatment, excluding those meeting the definition of tall oil. Lignin sulfonates, when not in the form of lignin sulfonic acid or its salts, also fall within this residual classification.

The primary distinction from its sibling category, 3804.00.10.00, lies in the chemical form and specific classification of lignin-based products. While 3804.00.10.00 is dedicated to lignin sulfonic acid and its salts, this category covers other forms of residual lignin or treated spent liquors that do not fit that specific definition. It acts as a residual provision for materials from wood pulp processing that are not otherwise accounted for.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, the focus for classification within 3804.00.50.00 is on determining whether a particular residual product from wood pulp manufacturing, after any concentration, desugaring, or chemical treatment, does not qualify as lignin sulfonic acid or its salts, and is also not considered tall oil of heading 3803. The key criterion is the residual nature of these substances and their origin from the papermaking process.