3201.90 - Other:

Category 3201.90 encompasses "Other" tanning or dyeing extracts falling under the broader heading of tanning extracts of vegetable origin. This classification includes vegetable-derived extracts used primarily for their tanning properties, which are essential in the leather industry to convert rawhide into durable leather. It also covers related products used in dyeing or as chemical intermediates due to their tannin content.

This category distinguishes itself from its siblings, 3201.10 (Quebracho extract) and 3201.20 (Wattle extract), by encompassing all other vegetable tanning extracts not specifically named. While quebracho and wattle are distinct species yielding specialized extracts, 3201.90 serves as a residual category for a wider array of plant-based tanning agents. The classification relies on the origin of the extract and its primary function as a tanning or dyeing agent, rather than its specific botanical source unless otherwise specified in the subheadings.

The subcategories within 3201.90 provide further detail and refinement. 3201.90.10.00 specifically classifies tannic acid when present at 50% or more by weight, indicating a purified or concentrated form. Subcategory 3201.90.25.00 lists a range of other specific botanical sources for vegetable tanning extracts, such as canaigre, chestnut, and oak, providing more granular classification for these common alternatives. Finally, 3201.90.50.00 acts as a further residual category for any remaining vegetable tanning extracts not covered by the more specific subheadings.