A method for manufacturing azo pigments, dye compositions, colorants, colored molded articles, colored anodized films, and a method for manufacturing the pigments.

Abstract

This invention relates to an azo dye represented by the following general formula (1) or (2). [In formulas (1) and (2), R1 to R4 independently represent -H or -NO2, and any one or two of R1 to R4 represent -NO2; R5 to R18 independently represent -H, -NH2, -OH, -SO3X, -COOX, -NO2, -SO2CH3, -SO2CH2CH3, an alkyl group having 1 to 3 carbon atoms, or an amino group having 1 to 12 carbon atoms that may have substituents; In formula (1), any one to three of R5 to R11 are -NH2, and any one to three of R5 to R11 are -SO3X; In formula (2), any one to three of R12 to R18 are -NH2, and any one to three of R12 to R18 are -SO3X; X independently represents a non-color-developing cation.]