C 0746 (OTTO) Copper(II) phthalocyanine, 90%+ - Cas 147-14-8 - used in paints and dyes. C 0746 (OTTO) Copper(II) phthalocyanine, 90%+ - Cas 147-14-8 used in inks, coatings, and many plastics. The pigment is insoluble and has no tendency to migrate in the material. It is a standard pigment used in printing ink and the packaging industry.