Ir2(SO4)3 + Tl2SO4 + 24H2O → 2{TlIr(SO4)2•12H2O}
Iridium(III) sulfate react with thallium(I) sulfate and water to produce iridium(III)-thallium(I) sulfate dodekahydrate. Iridium(III) sulfate and thallium(I) sulfate - saturated solutions. This reaction takes place at a temperature near 0°C.