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:
PR179—Perylene Maroon
Pigment Type
organic
Chemical Name
n/a
Chemical Formula
C26H14N2O4
Properties
Perylene Maroon is a transparent, dull to moderately dull, deep red pigment. Its mixing compliment is Phthalo Green, and together they produce a pure black that is darker than most carbon-based pigments. Perylene Maroon is not suitable for acrylics.
Permanence
Perylene Maroon has excellent permanence and lightfastness, and it can be an appropriate replacement for Anthraquinone Red in watercolor form.
Toxicity
Perylene Maroon has no significant acute toxicity. Its long term hazards are currently unknown.
History
Perylenes have been used as vat dyes since 1912, but they were not manufactured and sold as pigments until 1957.
Alternate Names
Perylene.
PR122—Quinacridone Magenta
Pigment Type
organic, quinacridone
Chemical Name
n/a
Chemical Formula
C22H16N2O2
Properties
Quinacridone Magenta is a semi-transparent and powerful bluish red with an impressive mixing range. It makes an excellent glazing color and is one of the bluest of the Quinacridone colors. The pigment's properties vary considerably, depending on how it is ground.
Permanence
Quinacridone Magenta is very permanent with very good to excellent lightfastness in most media, but some argue it is less lightfast in watercolor form. Although Quinacridone Magenta received only a passing grade of "fair" under ASTM test protocols, other test results have rated the pigment very good to excellent.
Toxicity
Quinacridone Magenta has no 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
Quinacridone Magenta came from a red violet aniline dye that was first produced in 1858 by Natanson. It was called Magenta to commemorate a battle in Magenta, Italy. Over time, Magenta became the standard color name for a deep, violet red. 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.
Alternate Names
Acra Red, Quinacridone Violet (PV19), Thalo Red Rose.
PV23—Dioxazine Violet
Pigment Type
organic
Chemical Name
carbazole dioxazine
Chemical Formula
C34H22Cl2N4O2
Properties
Dioxazine Violet is transparent and has very high tinting strength. It is a staining pigment, very dark valued when it is used at full strength. Concentrated, it paints out nearly black, but it mixes with Titanium White to form bright, opaque tints of purple. PV23 produces slightly redder shades than PV37. Because the hue can vary with the conditions of preparation and grinding, it may be offered in red shade, blue shade, and so forth.
Permanence
Dioxazine Violet has good lightfastness. There may be some concern about it fading or shifting in color in tints and washes. Some artists have reported that PV37, a molecular variant, is more lightfast than PV23.
Toxicity
n/a
History
Two molecular variants of Dioxazine Violet, PV23 and PV37, are available. They have similar properties, but mix slightly differently.
Alternate Names
Dioxazine Purple, Chromothal Violet, Mauve, Carbazole Violet.
