Pigment Yellow 10

Pigment Yellow 10 is an organic compound that is classified as a monoazopyrazolone pigment. It is used as a yellow colorant, notably as yellow road marking on highways in the US.


 * Yellow road marking.jpg

The compound is synthesized by coupling the diazonium salt derived from dichloroaniline with the pyrazolone. The structure of the dye, as determined by X-ray crystallography, consists of planar molecule with a C=O bond and two hydrazone groups.