HomePaint and MediumsGouacheTri-Art Art Noise Permanent Acrylic GouacheTri-Art Art Noise Permanent Acrylic Gouache - Transparent Purple, 500 ml, Bottle

Tri-Art Art Noise Permanent Acrylic Gouache - Transparent Purple, 500 ml, Bottle

Item #:01640-6005
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Tri-Art Art Noise Permanent Acrylic Gouache - Transparent Purple, 500 ml, Bottle with Swatch
Tri-Art Art Noise Permanent Acrylic Gouache - Transparent Purple, 500 ml, Bottle with Swatch
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Product Details

Color:
Transparent Purple
Description:
Permanent Acrylic Gouache
Size:
500 ml (16.9 oz)
Format:
Bottle

Pigment Information

This color contains the following pigments:

PR57-Lithol Rubine

PV23-Dioxazine Violet


Pigment Name

PR57-Lithol Rubine

Pigment Type

organic, monoazo

Chemical Formula

C18H12N2O6, sodium salt

Properties

Lithol Rubine is a deep transparent red dye, generally slightly bluish, that is laked as a salt with sodium or calcium to form a pigment.  PR57 is the sodium salt, and has a more bluish tone. PR57:1 is the calcium salt, and is the most widely used. Lithol Rubine makes clean pinks when tinted. Sources vary greatly in hue and transparency. Lithol Rubine has high tinting strength.

Permanence

Lightfastness is considered only fair to good. Superior products are available when lightfastness is paramount. Where greater lightfastness is needed in process color printing, the more expensive pigment PR184, a Naphthol AS pigment,  is often substituted for Lithol Rubine.

Toxicity

Lithol Rubine is not considered toxic. It is used in food, drugs, and cosmetics, such as lipstick. It can be used in art materials intended for children.

History

Lithol Rubine pigments (especially the calcium salt PR57:1) are widely used in inks, paints, plastics, and textiles. Lithol Rubine is widely used as magenta in process color printing.


Pigment Name

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

History

Two molecular variants of Dioxazine Violet, PV23 and PV37, are available. They have similar properties, but mix slightly differently.


Safety Data Sheet

UPC Code: 626309321075