Symuler Fast Red 4134S Naphthol AS 56396-10-2 Dainippon Ink and Chemicals, Incorporated (DIC) Color pigment & dye Inks >> Water-based INKS >> Lithographic and Offset Inks INKS >> Flexographic inks Naphthol AS. Used in offset, metal, porous and flexographic inks. Naphthol AS. Used in offset, metal, porous and flexographic inks.