This is a darker variation of our Naphthol Red, serving as an affordable single-pigment alternative to Cadmium Red Medium that is less opaque and lightfast. (Series 5) 

Pigment Classification: Organic
Color Index Name: PR5
Color Index Number: 12490
Chemical Description: Naphthol ITR
Opacity/Transparency: Semi-Opaque
Lightfastness Rating: ASTM 2
Permanency: Very Good