A very bright orange-ish, semi-transparent red, is a synthetic pigment with good lightfastness. It is a good choice as an alternative to Cadmium Red Light. (Series 5)

Pigment Classification: Synthetic Organic
Color Index Name: PR112
Color Index Number: 12370
Chemical Description: Naphthol AS-D
Opacity/Transparency: Semi-Transparent
Lightfastness Rating: 2
Permanency: Very Good