FIELD: analytical chemistry (indicator compounds), applicable for determination of rhenium (VII) in aqueous solutions, in particular, in sewage and process solutions. SUBSTANCE: the indicator compound for determination of rhenium (VII) in aqueous solutions contains potassium thiocyanate, hydrochloric acid, tin chloride (II) and water, in addition it contains sorbent-anionite at the following relation of components, percent by mass: anionite - 0.55; potassium thiocyanate - 1.07; tin chloride (II) - 0.52; hydrochloric acid - 3.02; water - the rest. EFFECT: expanded linear range of the determined contents of rhenium (VII) in aqueous solutions, enhanced sensitivity and improved selectivity. 2 tbl
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