The solubility properties of ZnSO4-Met/Phe/His-H2O systems at 25 degrees C
in the whole concentration range have been investigated by phase equilibriu
m method, and the corresponding equilibrium diagrams have been constructed.
Under the direction of the phase equilibrium result, the compounds of ZnSO
4 with Met, Phe and His which are not reported in literatures have been pre
pared and characterized,