Category:
Prophylactic Biological Products
CAS NO:
59820-43-8
Standard:
In-house Standards,
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HC Yellow 4 (CAS No. 21560-89-0) is a synthetic azo dye used primarily in the cosmetics and textile industries. Its molecular formula is C17H14N6O4S2. The product is manufactured via diazotization and coupling reactions, yielding a yellow powder with high color intensity.
Strictly regulated in EU cosmetic regulations due to potential allergenic properties; avoid inhalation of dust. Store in cool, dry conditions away from direct sunlight to maintain chemical stability.