Collection of Czechoslovak Chemical Communications - digital archive 

Abstract

The width of the metastable region of potassium sulfate was measured in the presence of various concentrations of chromate, copper(II) and aluminium ions. The dependence of the metastable region width on the impurity concentration is generally nonlinear and in some cases even changes its nature; while in low concentrations some impurities make the metastable region narrower, they make it broader if present in higher concentrations. The effect of the impurities increases in order K₂Cr₂O₇ - CuSO₄ - Al₂(SO₄)₃.