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Citation: Cui Jin-Lan, Zhang Yi, Liu Chang-Jian. Phase Diagrams of Na₂CrO₄-(NH₄)₂CrO₄-H₂O System[J]. Acta Physico-Chimica Sinica, ;2000, 16(01): 70-75. doi: 10.3866/PKU.WHXB20000114 shu

Phase Diagrams of Na₂CrO₄-(NH₄)₂CrO₄-H₂O System

1.
Institute of Chemical Metallurgy,Chinese Academy of Sciences,Beijing 100080

Received Date: 9 March 1999
Available Online: 15 January 2000

The phase diagrams of Na_2CrO_4- (NH_4)_2CrO_4-H_2O system at 20℃ and 50℃ have been determined by solubility method. The experimental results have also been verified by mathematical method. The phase diagrams show that there is a double salt of NaNH_4Cro_4• 2H_2O formed in the system, which will decrease the purity of (NH_4)_2CrO_4 Consequently, a method is found to separate the fixture of ammonium chromate and double salt by analysing the phase diagrams.
- Phase diagram,
- Separation,
- Ammonium chromate,
- Double salt
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Phase Diagrams of Na2CrO4-(NH4)2CrO4-H2O System

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通讯作者: 陈斌, bchen63@163.com

Phase Diagrams of Na₂CrO₄-(NH₄)₂CrO₄-H₂O System