Symuler Fast Pyrazolone Orange G Disazo;Pyrazolone 3520-72-7 Dainippon Ink and Chemicals, Incorporated (DIC) Color pigment & dye Inks INKS >> Lithographic and Offset Inks INKS >> Gravure Disazo;Pyrazolone pigment. Used in offset and gravure inks. Disazo;Pyrazolone pigment. Used in offset and gravure inks.