3204.15.35.00 - Solubilized vat orange 3; Vat blue 2; Vat red 44; and Vat yellow 4, 20

This HTS category encompasses specific solubilized vat dyes and other vat dyes that do not fall under more specifically enumerated sibling categories. It includes Vat Orange 3, Vat Blue 2, Vat Red 44, and Vat Yellow 4 (20). Solubilized vat dyes are forms of vat dyes that have been modified to improve their solubility in water, making them easier to apply in dyeing processes, particularly for cellulosic fibers. The inclusion of "20" after Vat Yellow 4 signifies a specific variant or concentration of this dye.

This classification distinguishes itself from its siblings by the specific combination of dyes listed. For instance, it differs from 3204.15.10.00, which covers synthetic indigo, and from 3204.15.20.00, which includes a different set of vat brown, orange, and violet dyes. Similarly, it is distinct from 3204.15.25.00 (Vat Red 1) and 3204.15.30.00, which enumerates a broader range of solubilized and other vat dyes. This category serves as a residual grouping for vat dyes not otherwise specified at this level.

As a leaf node, this classification does not have further subcategories. The "Other" designation within the sibling categories signifies that this specific combination of dyes, Vat Orange 3, Vat Blue 2, Vat Red 44, and Vat Yellow 4, 20, is not further subdivided and represents the final level of detail for these particular products within the HTS structure. Proper classification relies on accurate identification of the specific vat dyes present.