Gamblin 1980 Oils -andnbsp;Diarylide yellow HR70 (PY83);andnbsp;PY83-Diarylide Yellow 83

This colour has been prized for hundreds of years. But only now has the colour been made with a completely lightfast pigment.

Pigmentandnbsp;Composition and Permanence:

Pigment Name:andnbsp;Diarylide yellow HR70 (PY83); PY83-Diarylide Yellow 83

Pigment Type: organic, disazo

Properties

Diarylide Yellow is a semi-opaque, moderately staining, intense deep reddish yellow pigment with good tinting strength.

Permanence

Diarylide Yellow 83 has excellent lightfastness and permanence. However, it can fade in tints, so some artists do not consider it suitable as an artist’s colour. Many other diarylide yellow pigments are reported to have fair to poor lightfastness, and some are entirely fugitive.

Diarylide Yellow 83 is one of the most permanent of the entire group.

Toxicity

Diarylide Yellow has no significant acute hazards, but chronic hazards have not been well studied.

History

Diarylide Yellow comes from a family of azo pigments called Diarylide. These yellow-hued pigments were developed around 1940 and are very important in printing inks.