| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily producing an indium oxide powder. SOLUTION: The production method comprises a step wherein molten indium metal is dropped into the water having a temperature not higher than 70°C, thereby being processed into a granulated indium metal having a size allowing easy dissolution into an acid, a step wherein an indium salt solution is prepared by dissolving the granulated indium metal into an acid such as nitric acid, and a step wherein an indium oxide powder is prepared by neutralizing the indium salt solution with an aqueous alkaline solution or the like for precipitating indium hydroxide, and then firing the precipitated indium hydroxide. COPYRIGHT: (C)2008,JPO&INPIT
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