Is Mercurochrome a mixture or a solution?
Actually, it is both. Chemically, a mixture is defined as “a combination of two or more substances in which each substance retains its identity”, while a solution is “a mixture in which the composition and properties are the same throughout”. Therefore, as long as the di-sodium salt of the mercurochrome (typically used in the 2% antiseptic) completely dissolves in the aqueous solution, it would meet definitions of both mixture and solution.
