in ethanol excess soln. of acid addn. to Sb-compd., heating (3 h, reflux, water bath), soln. pouring to petri dish; sepn. by different solubility in benzene;

in ethanol excess soln. of acid addn. to Sb-compd., heating (3 h, reflux, water bath), soln. pouring to petri dish; sepn. by different solubility in benzene;