Azo pigment, method for producing azo pigment, dispersion containing azo pigment, and coloring composition

摘要

Disclosed is an azo pigment which exhibits extremely good color reproducibility, dispersibility and pigment dispersion stability, while having excellent hue and coloring power. Specifically disclosed is an azo pigment which is represented by formula (1) and has characteristic X-ray diffraction peaks at Bragg angles (2θ±0.2˚) of 7.2˚, 13.4˚, 15.0˚and 25.9˚in CuKαcharacteristic X-ray diffraction, or a tautomer thereof.