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.

Alternate Names

Transparent White.