The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.

• 采用硝酸分解法可制取纯度高于99%25的三氧化二铟.；本法具有设备少、操作简单、成本低、见效快等优点