BLUE 15:1 They Have excellent dispersion and rheological characteristics required for printing inks with good transparency , gloss and tone. These pigments are homogeneous belonging to Azo Phthalocyanine groups. Application : Pigments for Paints, Pigments for Textiles, Pigments for Printing Inks, Pigments for Plastics. Heat Fastness :280�¢?? for 10 min for Blue 15.1 Grit Content : 100ppm max. Oil Absorption(ml/100gm) : 45 + 2