Lithopones, cadmium pigments

Cadmium lithopone n. Pigment red 108 (77202). Range of yellow, orange, and red colors consisting of either cadmium sulfide or cadmium red reduced on barium sulfate. They are usually produced by coprecipitation followed by calcinations. 

Cadmolith, lithopone-type cadmium pigments. Millennium Specialty Chemicals, Colors and Silica... 

The Colour Index (1971) lists two red cadmium pigments. Cl Pigment Red 108 and Cl Pigment Red 113. Compositionally these relate to cadmium sulfide selenides (CdSjcCdSe) and pure cadmium selenides (CdSe) as well as cadmium mercury sulfides (CdS.xHgS) q.v.). Co-precipitates with barium sulfate q.v.) are also known, sometimes referred to as cadmium red lithopone Colour Index, Cl 77202). 

Cadmium hydroxide is the anode material of Ag—Cd and Ni—Cd rechargeable storage batteries (see Batteries, SECONDARY cells). Cadmium sulfide, selenide, and especially telluride find utility in solar cells (see Solarenergy). Cadmium sulfide, lithopone, and sulfoselenide are used as colorants (orange, yellow, red) for plastics, glass, glazes, rubber, and fireworks (see Colorants for ceramics Colorants forplastics Pigments). 

Cadmium/mercury lithopones n. Orange, red, and maroon pigments consisting of calcined co-precipitations of cadmium sulfide and mercury sulfide, with barium sulfate. 

Cadmium lithopones, otherwise known as cadmoliths are cadmium reds or yellows that contain barium sulfate coprecipitated with the pigment. 

The 1920s saw the development of both cadmium oil colors and lithopones, which were designed to reduce the cost of the pigment. Lithopones are virtually the... 

Cadmium lithopones, otherwise known as cadmoliths [1] are cadmium reds or yellows that contain barium sulfate coprecipitated with the pigment Although not discussed here, reds made with mixtures of cadmium sulfide and mercury sulfide, are known as mercadiums [2] and have also been produced as lithopones. 

Additionally, two cadmium chromates are known (classed with chromate pigments) along with a cadmium tungstate (classed with tungsten pigments). Lithopone forms - that is, pigments coprecipitated with barium sulfate (q.v.) - of the cadmium sulfides are also extant. The composition of cadmium white mentioned in later nineteenth cenmry literature is not well known Salter (1869) describes it as a hydrated oxide or carbonate of cadmium. 

The Colour Index (1971) lists cadmium yellow as Cl 77199/Pigment Yellow 37 and the lithopone form as Cl 77117/Pigment Yellow 35. 

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