9902.08.24 - Mixtures of Acid Black 220 A (Chromate(2-), [3-hydroxy-4-[(2- hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)] [1-(2- hydroxy-5-nitrophenyl)azo]-2-naphthalenolato(2-)]-, lithium sodium) (CAS No. 85828-76-8), and Acid Black 220 B (Chromate(2-), [3-hydroxy-4-[(2-hydroxy-1- naphthalenyl)azo]-7-nitro-1-naphthalenesulfonato(3-)] [N-[7-hydroxy-8-[(2- hydroxy-5-nitrophenyl)azo]-1-naphthalenyl]acetamidato(2-)]-, lithium sodium) (CAS No. 85828-75-7) (provided for in 3204.12.45)

This HTS code, 9902.08.24, specifically covers mixtures of two designated dyes: Acid Black 220 A and Acid Black 220 B. These are complex chromate-based azo dyes, with precise chemical compositions detailed by their CAS numbers (85828-76-8 and 85828-75-7 respectively). The "provided for in 3204.12.45" clause indicates that these specific mixtures, while falling under temporary legislation in Chapter 99, are ultimately derived from or related to products classified under heading 3204, which pertains to synthetic organic coloring matter.

As a classification within Section XXII and Chapter 99, this entry represents a temporary modification or a specific restriction applicable to these particular dye mixtures. Unlike the sibling categories which cover live animals, this node is focused on highly specialized chemical products. Its existence in Chapter 99 signifies a departure from the standard classification of dyes found in Chapter 32, indicating a unique regulatory or trade policy purpose.

Since this node is a leaf node, there are no further subcategories. Classification under 9902.08.24 is definitive for the specified mixtures of Acid Black 220 A and 220 B. Importers must ensure their goods precisely match the chemical descriptions and CAS numbers provided to correctly apply this temporary classification and any associated provisions.