| abstract |
The invention relates to a method for producing chromium (III) oxide, containing the following steps: a) an alkali metal ammonium chromate double salt is decomposed at a temperature of between 200 and 650°C, especially between 250 and 550°C, b) the decomposition product obtained in step a) is washed, and c) the product obtained in step b) is calcinated at a temperature of between 700 and 1400°C, especially between 800 and 1300°C. |