D186 Metallic Violet/Violet Métallique - PV23 Dioxazine Violet (Organic, Carbazole dioxazine), Mica PW20 (inorganic, aluminum silicate)
Two molecular variants of Dioxazine Violet, PV23 and PV37, are available. They have similar properties, but mix slightly differently. Mica has been used as a pigment since prehistoric times.
Pigment 1: PV23 Dioxazine Violet
Two molecular variants of Dioxazine Violet, PV23 and PV37, are available. They have similar properties, but mix slightly differently.
Pigment name: PV23 Dioxazine Violet
Pigment Type: Organic
Chemical Name: Carbazole dioxazine
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. Some artists have reported that PV37, a molecular variant, is more lightfast than PV23. However, there may be some concern about it fading or shifting in colour in tints and washes.
Toxicity: n/a
Alternate Names: Dioxazine Purple, Chromothal Violet, Mauve, Carbazole Violet.
Pigment 2: Mica PW20
Mica has been used as a pigment since prehistoric times.
Pigment name: PW20 Mica
Pigment Type: Inorganic
Chemical Name: Aluminum silicate
Properties: Mica is an off-white pigment with complex reflective effects. It is often used with transparent pigments to create mixed pigments with interference and pearlescent effects.
Permanence: Mica is permanent and lightfast.
Toxicity: Although it is completely non-toxic and not bio-reactive, fine particles may be irritating. This is of concern primarily for those exposed occupationally to dry mica powder. Breathing mica particles may cause lung fibrosis and pneumoconiosis.
Alternate Names: n/a
