HomePaint and MediumsGouacheWinsor & Newton Designers GouacheWinsor & Newton Designers' Gouache - Process White, 30 ml jar

Winsor & Newton Designers' Gouache - Process White, 30 ml jar

Item #:00801-1093
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Process White
Process White
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AP Non-Toxic.

Products bearing the AP seal of the Art & Creative Materials Institute, Inc. (ACMI) are certified non-toxic. A product can be certified non-toxic only if it contains no materials in sufficient quantities to be toxic or injurious to humans, or to cause acute or chronic health problems.

Product Details

Color:
Process White
Description:
Designers Gouache
Size:
30ml (1 oz)
Format:
Jar
No.
931

Pigment Information

This color contains the following pigments:

PW5-Lithopone


Pigment Name

PW5-Lithopone

Pigment Type

inorganic

Chemical Name

coprecipitated zinc sulphide and barium sulphate

Chemical Formula

Zn + BaSO4

Properties

Lithopone is a low tinting strength, semi-transparent white pigment that is often used as a filler or extender in other colors, or as the base for laked pigments.

Permanence

Lithopone is absolutely permanent and lightfast.

Toxicity

Lithopone is not toxic.

History

Lithopone was discovered by G.F. de Doubet in 1850. It  was developed commercially in the 1870s as a substitute or supplement for lead carbonate, to overcome the many shortcomings of white lead pigment, including toxicity, poor weathering, and darkening in the presence of sulfur compounds. It is used most often in interior paints and enamels. Its use as a white pigment has been superceeded in many applications by titanium dioxide.