What it is
CI 19140 is a water-soluble synthetic azo dye that produces a bright yellow color. It is used in cosmetics solely to impart or adjust the color of a formulation, often in small amounts to achieve a desired shade. It carries different regulatory names across markets, such as Yellow 5 in the United States and Yellow No. 4 in Japan.
Safety & warnings
CI 19140 is a permitted cosmetic colorant subject to regional purity and use restrictions. As a synthetic azo dye it has been reported to cause sensitivity reactions in a small number of predisposed individuals, so those with known dye sensitivities may wish to avoid it.
Origin & sourcing
Synthetic; a manufactured azo colorant.
Questions everyone asks
What is CI 19140 used for?
It is a synthetic yellow dye used purely as a colorant to tint cosmetic products.
Is CI 19140 the same as Yellow 5?
Yes, CI 19140 is the color index designation for the dye known as Yellow 5, also called tartrazine.