Art Spectrum® Dry Ground Pigment Naphthol Red.
Naphthol Red is a modern warm red pigment developed in the early 20th century.
A transparent synthetic organic pigment with very good lightfast properties.
|Series||Colour Index||Chemical Description||Classification||Opacity||ASTM|
|4||PR112||Naphthol (Monoazo)||Synthetic Organic||Transparent||ASTMII|
ASTM Approved Permanent Colours American Society for Testing and Materials, conforming to standard D4302-90.