Product Description A versatile mixing colour, Naphthol Red is a clean, intense primary red and an excellent alternative to toxic Cadmium hues. Artist Notes: Combine Naphthol Red with Delft Cobalt Blue for a lovely plum hue that is very useful in botanicals and for shadows in landscapes. Opacity: Opaque Paint Makers Notes: Naphthol Red was first used as an artist pigment during the 1920s. The name comes from the Greek word for mineral oil, a nod to the pigments petroleum-based origins. Pigment Number : PR 170 Pigment Type : Synthetic Organic Pigment Composition : Naphthol carbamide Lightfastness : II Very Good Toxicity : Non-Toxic