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00330-3421 — Vermilion Hue

Fine pigments, finely ground and evenly dispersed, produce vibrant washes and subtle gradations. Tubes. Also sets with brush, mixing tray, and watercolor guide. Also Sketchbox set.

Vermilion Hue

This color contains the following pigments:

PY65—Hansa Yellow
PR188 —Naphthol Red

PY65—Hansa Yellow

Pigment Type

monoazo

Chemical Name

n/a

Chemical Formula

C₁₈H₁₈N₄O₆

Properties

This Hansa Yellow ranges from reddish yellow to greenish yellow with temperature shifts from cool to warm hues. It has good tinting strength and average to slow drying time.

Permanence

This Hansa Yellow has excellent lightfastness, particularly in the darker shades.

Toxicity

Hansa Yellow has no significant acute hazards, though its chronic hazards have not been well studied.

History

Hansa Yellows were first made in Germany just before WW1 from a series of synthetic dyestuffs called Pigment Yellow. They were intended to be a synthetic replacement for Cadmium Yellow.

Alternate Names

Arylide, Arylide Yellow, Azo, Brilliant Yellow, Monoazo, Monolite Yellow, Permanent Yellow.

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PR188 —Naphthol Red

Pigment Type

organic monoazo

Chemical Name

n/a

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.