lithopone

lithopone
/lith"euh pohn'/, n.
a white pigment consisting of zinc sulfide, barium sulfate, and some zinc oxide, used as a pigment and filler in the manufacture of paints, inks, leather, paper, linoleum, and face powders.
[1880-85; LITHO- + Gk pónos a work, structure]

* * *

      brilliant white pigment used in paints, inks, leather, paper, linoleum, and face powder. Lithopone was developed in the 1870s as a substitute or supplement for lead carbonate ( white lead), to overcome its drawbacks of toxicity, poor weathering, and darkening in atmospheres that contain sulfur compounds. Lithopone is an insoluble mixture of barium sulfate and zinc sulfide that precipitates upon mixing solutions of barium sulfide and zinc sulfate. The precipitate is recovered by filtration, then calcined (roasted) at temperatures above 600° C (1,112° F). Although lithopone has been replaced in many applications by titanium dioxide, introduced after World War I, it is still widely used in a number of products, such as water paints.

* * *


Universalium. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • lithopone — ● lithopone nom masculin Pigment blanc, constitué par du sulfure de zinc et du sulfate de baryum, entrant dans la composition d enduits et de peintures de bâtiment. lithopone [litɔpɔn] n. m. ÉTYM. 1907, Petit Larousse; de litho , et d un élément… …   Encyclopédie Universelle

  • Lithopone — is a white pigment, a mixture of barium sulfate and zinc sulfide. It is used in interior paints and in some enamels.Wooden artifacts are treated with zinc sulfate and barium sulfide, which undergo ion exchange reaction to form the aforementioned… …   Wikipedia

  • Lithopone — Lithopone, s. Permanentweiß …   Lexikon der gesamten Technik

  • Lithopone — Lithopōne, s. Zink …   Kleines Konversations-Lexikon

  • lithopone — [lith′əpōn΄] n. [< LITHO + Gr ponos, work, product of work] a white pigment made by mixing barium sulfate with zinc sulfide, used in paints, linoleum, etc …   English World dictionary

  • Lithopone — Als Lithopone wird ein künstliches ungiftiges Weißpigment aus Bariumsulfat (Baryt, BaSO4) und Zinksulfid (Sphalerit oder Wurtzit, ZnS) bezeichnet. Sie wird in einem speziellen Herstellungsverfahren erzeugt, bei dem beide Komponenten in einem… …   Deutsch Wikipedia

  • Lithopone — Li|tho|po|ne 〈f. 19; unz.〉 weiße, deckende Anstrichfarbe aus Zinksulfid u. Bariumsulfat [<grch. lithos „Stein“ + ponos „Arbeit“] * * * Li|tho|po|ne [↑ Lith griech. pónos = Arbeit, Mühe, Lohn], die; : aus einem Gemisch von Bariumsulfat u.… …   Universal-Lexikon

  • lithopone — litoponas statusas T sritis chemija apibrėžtis Baltas pigmentas iš ZnS ir BaSO₄. atitikmenys: angl. lithopone rus. литопон …   Chemijos terminų aiškinamasis žodynas

  • lithopone — n. a white pigment of zinc sulphide, barium sulphate, and zinc oxide. Etymology: LITHO + Gk ponos work * * * lithopone see litho …   Useful english dictionary

  • lithopone — noun Etymology: International Scientific Vocabulary lith + Greek ponos work Date: circa 1884 a white pigment consisting essentially of zinc sulfide and barium sulfate …   New Collegiate Dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”