Diphenylcarbazone Mercuric Reagent

Diphenylcarbazone Mercuric Reagent Dissolve 0.1 g of 1,5-diphenylcarbazone in sufficient absolute ethanol to produce 50 mL and, separately, dissolve 1 g of mercury(ii) chloride in sufficient absolute ethanol to produce 50 mL. Mix equal volumes of the two solutions.