Quinacridone Red MagentaColor: Quinacridone Red Magenta Permanence: A Opacity: Opaque Pigment: PR122 Pigment description: Quinacridone ASTM Rating Ligthfastness: I Pigment classification: Synthetic organic Color Index Number: 73915 Viscosity range (mPa. s): 800 1. 500 Color Index The pigments used for artists colors are inorganic as well as organic. The inorganic pigments have been used since antiquity; most of them are extracted from minerals and soil, such as natural earth