Hoechst dyes are soluble in water and in organic solvents such as dimethyl formamide or dimethyl sulfoxide.
2.
Understanding of the nature of aqua ions is helped by having information on the nature of solvated cations in mixed solvents and non-aqueous solvents, such as liquid ammonia, methanol, dimethyl formamide and dimethyl sulphoxide to mention a few.