Schmincke Soft Pastel - Vermilion 040H

Pigment Information

This color contains the following pigments:

PR188 -Naphthol Red

PR3-Toluidine Red

PR242-Pigment Red 242

Pigment Name

PR188 -Naphthol Red

Pigment Type

organic monoazo

Chemical Formula

C33H24Cl2N2O6

Properties

This Naphthol Red is yellowish, with a high tinting strength and average drying time. It produces warmer shades and tints.

Permanence

This Naphthol Red has excellent lightfastness, though it is generally not considered adequate for exterior use.

Toxicity

Naphthol Reds are not considered toxic. They may cause eye, skin, or respiratory irritation. Contact with dry pigment should be avoided.

History

Naphthol pigments are actually dyes that are "laked" to form pigments. First developed by the German chemical company Hoechst A.G. before World War I, their use in artist paints began in the 1920s.

Pigment Name

PR3-Toluidine Red

Pigment Type

organic, monoazo

Chemical Formula

Properties

Toluidine Red is a semi-opaque, yellowish red pigment with high tinting strength.

Permanence

Toluidine Red has very good lightfastness.

Toxicity

Toluidine Red is not regarded as toxic.

History

Toluidine Red or Toluidine Scarlet has been used in inks, textiles, artist materials, and plastics.

Pigment Name

PR242-Pigment Red 242

Pigment Type

organic, disazo condensation

Chemical Formula

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.

Toxicity

History

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