Color Swatch created using heavy application/medium application/50% tint and was applied on acrylic primed canvas (7 oz) material.
This color contains the following pigments:
PR209—Quinacridone Red
Pigment Type
organic, quinacridone
Chemical Name
n/a
Chemical Formula
n/a
Properties
Quinacridone Red is a bright, clean red pigment with average drying time. Quinacridone pigments have relatively low tinting strength in general. For this reason, quinacridone colors are often expensive, because more pigment is required in the formulation.
Permanence
Quinacridone Red has excellent permanence and lightfastness.
Toxicity
Quinacridone Red has no known acute hazards. Overexposure to quinacridone pigments may cause skin irritation. Quinicridone pigments contain a compound found to be a skin, eye, and respiratory irritant.
History
Although quinacridone compounds became known in the late 19th century, methods of manufacturing so as to make them practical for use as commercial pigments did not begin until the 1950s. Quinacridone pigments were first developed as coatings for the automotive industry, but were quickly adopted by artists.
Alternate Names
n/a
PR221—Condensed Azo Pigment
Pigment Type
organic, condensed disazo
Chemical Name
n/a
Chemical Formula
n/a
Properties
PR221 is a transparent bluish-red pigment with high tinting strength compared to other transparent bluish-red pigments. Although its hue is not a perfect match, it is one of several newer red pigments that is being used to replace traditional fugitive colors such as carmine and alizarin crimson.
Permanence
PR221 has very good permanence and lightfastness, but is not as resistant to fading as the quinicridone pigments.
Toxicity
No acute toxic effects are known, but possible chronic effects have not been well studied.
History
Industrial processes for manufacturing condensed disazo pigments were developed by CIBA in the 20th century.
Alternate Names
Carmine Hue, Rose Madder Hue, Pink Madder Hue
