Gamblin 1980 Oils - Permanent Orange, 150 ml (5.07oz)

Gamblin 1980 Oils - PO62-Benzimidazolone Orange

Permanent Orange: A modern high key colour with a pure hue and the same masstone (but more transparent) than Cadmium Orange, and it remains brighter in its tint when mixed with white. Painters cannot mix a secondary with the same purity of this pure hue Orange.

When you use it thinly, a rich glowing glaze is created. It has an average drying time and loses some of its intensity as it dries.

Pigment Composition and Permanence:

Pigment Name: PO62-Benzimidazolone Orange

Pigment Type: organic, monoazo

Properties

Benzimidazolone Orange is a staining, yellowish orange pigment that can become dull in tints. It has an average drying time and loses some of its intensity as it dries. The yellowish-orange varieties are more transparent.

Permanence

Benzimidazolone Orange has excellent lightfastness and outstanding heat and solvent stability for a monoazo pigment.

Toxicity

Benzimidazolone Orange is not considered toxic.

History

The benzimidazole group of pigments was developed and patented in 1960 by Hoechst A.G., a German chemical manufacturer that was a forerunner of the pharmaceutical company Aventis. The use of benzimidazolone pigments in the auto industry, especially Benzimidazolone Orange, became common in the 1980s because they were common replacements for lead chromate pigments, which were phased out during this period.