ONE THAT COMES IN A PACKAGING THAT IS INNOVATIVE, ELEGANT, HANDY AND FEELS RIGHT.

Diarylide Yellow is a semi-opaque, moderately staining, intense deep reddish yellow pigment with good tinting strength. Red iron oxide is very dense and opaque, with excellent tinting strength and covering power. It is dependable when mixing with all other permanent pigments and yields good flesh tints when mixed with Zinc White. While Naphthol Red has a yellowish undertone is semi-opaque with a high tinting strength. Diarylide Yellow 83, Red iron oxide and Naphthol Red has excellent lightfastness and permanence.

Composition and Permanence:

Pigment Combination: PY83-Diarylide Yellow 83; PR101-Red Iron Oxide; PR188 -Naphthol Red

1 PIGMENT NAME: 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 for their colour. Many other diarylide yellow pigments have fair to poor lightfastness, and some are entirely fugitive. Diarylide Yellow 83 is reputed to be 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.

2 Pigment Name: PR101-Red Iron Oxide

Pigment Type: Earth, synthetic

Chemical Name: iron oxides (synthetic), iron oxide, silica, alumina, lime, and magnesia or hydrated iron oxide

Properties

Red iron oxide varies in hue and transparency, depending on hydration and slight impurities. Indian Red is a slightly duller, deep brick hue with a bluish undertone. It is very dense and opaque, with excellent tinting strength and covering power. It is dependable when mixing with all other permanent pigments and yields good flesh tints when mixed with Zinc White.

It is the synthetic version of PR102, a pigment made from earth reds or natural red iron oxides, and the names applied to PR101 and PR102 often overlap. The synthetic red iron oxides have mostly replaced natural red iron oxides and are brighter, more robust, refined, and permanent. Indian Red is the highest grade bluish shade. Light Red, English Red, and Venetian Red are yellowish shades. Mars Violet is a dull and subdued bluish or purplish oxide.

Permanence

Red iron oxide is very lightfast with excellent permanence.

Toxicity

Red iron oxide has no significant hazards.

History

Natural red iron oxide comes from the mineral ore hematite, called bloodstone by the ancient Greeks from the word hema, meaning blood. It is one of the oldest pigments, has been used by every major civilization, and was an essential mineral for medieval alchemists. It was not widely used in artists' materials until the 17th century and was not produced in large quantities until the 18th century.

3 Pigment Name: PR188 -Naphthol Red

Pigment Type: Organic monoazo

Properties

This Naphthol Red is yellowish, semi-opaque 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 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 dyes that are laked to form pigments. First developed by the German chemical company Hoechst A.G. before World War I, artist paints began in the 1920s.