2927.00.30.00 - Fast color bases and fast color salts

This HTS category, 2927.00.30.00, specifically enumerates "Fast color bases and fast color salts." These are essential intermediate compounds used primarily in the textile and printing industries to produce vibrant and permanent colors. Fast color bases are often aromatic amines or their derivatives, while fast color salts are typically diazonium salts derived from these bases. Their defining characteristic is their ability to undergo a coupling reaction with another component, known as a coupling component, to form a stable, insoluble azo dye directly on the fiber or substrate.

This category distinguishes itself from its sibling, 2927.00.25.00 (Photographic chemicals), by its intended application. While both categories fall under diazo, azo, and azoxy compounds, photographic chemicals are formulated for light-sensitive reactions in imaging processes, whereas fast color bases and salts are designed for textile dyeing and pigment production. The "Other" designation within this branch signifies that these specific compounds, due to their unique properties and widespread use in coloration, warrant their own distinct subheading beyond more general or specialized chemical classifications within Chapter 29.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification under 2927.00.30.00 relies on the precise chemical identity and intended commercial use of the imported or exported substances. Importers and exporters should ensure that the goods are indeed utilized as precursors for producing stable, insoluble azo dyes in coloration processes, rather than as photographic agents or other diazo/azo compounds with different applications.