Cobalt titanate green
Composition and Properties of Cobalt Titanate Green
Cobalt titanate green is a mixed metal oxide of cobalt and titanium with the formula of Co2TiO4. It is not to be confused with cobalt green also called Rinmann’s green which is a mixed oxide of cobalt and zinc. The pigment is a very stable and lightfast and is also not toxic. It shows a slightly yellowish tint which makes it ideal for landscape painting.
Names
PG 50, CI 77377Cobalt: from the German word Kobold meaning evil house spirit. The name was originated by medieval miners who believed, that cobalt ores made it difficult to extract silver from silver ore.Titanium: from Latin titan, from Greek titan, member of a mythological race of giants (originally six sons and six daughters of Gaia and Uranus) who were overthrown by Zeus and the other gods. The name is perhaps from tito “sun, day,” From Online Etymology Dictionary
Preparation
The pigment is prepared by heating the oxides of cobalt and titanium to temperatures between 800 to 1100 °C.
History of Use
The pigment was discovered around 1930 together with the other mixed oxides of titanium with other elements such as chromium, nickel, and antimony.
