3204.12.50.20 - FD&C yellow 5 (CAS No. 1934-21-0)

This HTS classification pertains to FD&C Yellow 5, also known by its Chemical Abstracts Service (CAS) number 1934-21-0. As a synthetic organic coloring matter, it falls under the broader category of acid dyes. These dyes are characterized by their ability to form salts with basic groups in fibers and are commonly employed in the coloration of various products. The inclusion of specific Color Index names and CAS numbers ensures precise identification for customs purposes.

Within its immediate sibling categories, this classification is distinguished by the specific color index. For instance, it differs from 3204.12.50.10, which covers FD&C Red 40, and 3204.12.50.30, which identifies FD&C Yellow 6. The "Other" designation at this level (3204.12.50.90) serves as a catch-all for any other acid dyes not specifically enumerated.

As a leaf node in the HTS structure, HTS Code 3204.12.50.20 does not have further subcategories. This means that the classification is definitive at this level, and imported or exported goods meeting the description of FD&C Yellow 5 will be classified under this specific code, assuming they align with the general principles of acid dyes and preparations based thereon as outlined in Chapter 32.