Surfactant/solvent systems for liquid organic formulations (preparations) which comprise one or more aromatic-based surfactants and one or more completely esterified organic phosphates and/or phosphonates which are as polar as possible, but are at the same time water-insoluble or soluble in water to 5 g/l, as solvents, are suitable to be used for the preparation of emulsifiable concentrates and corresponding liquid preparations derived therefrom, such as aqueous spray mixtures.