5Howard S. Solubililies of inorganic and organic compounds [M] .3th ed. Oxford:New York Pergamon Press, 1979, Vol. 2.
6LAN T-Y, CAO J-L, JIN H-Y. Phase diagrams of Na2SO4-MgSO4-CO(NH2)2-H20 system at 25 2 and their application [J]. J Chem Eng Data, 2012, 57(2), 389-393.
