Schmincke Horadam Aquarell Artist Watercolor - Permanent Red, 15 ml tube

Pigment Information

This color contains the following pigments:

PO62-Benzimidazolone Orange

PR242-Pigment Red 242

Pigment Name

PO62-Benzimidazolone Orange

Pigment Type

organic, monoazo

Chemical Formula

C17H13ClN6O5

Properties

Benzimidazolone Orange is a staining, yellowish orange pigment that can become dull in tints. It has an average drying time, and it 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 benzimidazolone 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. 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.

Pigment Name

PR242-Pigment Red 242

Pigment Type

organic, disazo condensation

Properties

A bright yellowish red, often referred to as scarlet. It has average tinting strength.

Permanence

It has excellent resistance to solvents, acids, and alkali, and is heat stable up to 300°C. Disazo condensation compounds have very good lightfastness for organic pigments.

History

Pigment Red 242 is used to color plastics, paints, and printing inks.