R&F Encaustic Paint Block - Cobalt Violet Deep, 40 ml
It is very royal purple and leans a little red. Monet used it for his intense purple shadows.
- Pigment Composition: PV14-Cobalt Violet
- Paint Lines: Encaustic, Pigment Stick
- Opacity: Semi-Transparent
- Pigment Stick Drying Rate: Fast
- Classification: Synthetic Inorganic
- Chemical Composition: Cobalt phosphate
- Safety Information: Conforms to ASTM D-4236
- Safety Warnings: This product contains cadmium, a chemical known to the State of California to cause cancer.
Pigment Name: PV14-Cobalt Violet
Classification: Synthetic Inorganic
Chemical Composition: Cobalt phosphate
Properties
Cobalt Violet is a pure hue that cannot be mixed with other colours. It is cool in its masstone, chemically stable, and semi-opaque. It has a weak tinting strength and is generally offered in a bluish and a reddish-violet shade. Cobalt Violet can be quite expensive, so it is used mainly as a top coat colour. It is compatible with all painting media, but its light variety can change in oil form. It grays down considerably when mixed with white. Manganese Violet is a less costly substitute for the bluish variety of Cobalt Violet.
Permanence
Cobalt Violet has excellent permanence, and its lightfastness makes it more desirable than older organic dye violets.
Toxicity
Cobalt Violet is highly toxic by both ingestion and inhalation, particularly in dry pigment form. However, much of the material presently used to make paints of this colour is non-toxic cobalt phosphate.
History
Cobalt comes from the Middle High German word kobold, an underground goblin because miners thought cobalt harmed silver ores. Salvetat described Cobalt Violet in 1859 as the first absolute violet pigment. The light variety of this pigment, developed in Germany earlier in the 19th century, was particularly poisonous due to its arsenic content. Cobalt Violet hues were the only permanent bright violets available to artists until the 1950s.
