FIELD: ferrous metallurgy. SUBSTANCE: invention refers to chemical treatment of metals, in particular, to pickling and degreasing of ferrous metals as well as copper, aluminium and their alloys. Solution can be used in welding, dyeing and galvanoplastic processes in various branches of industry. Solution for somultaneous pickling and degreasing of metals contains, per cent by mass: orthophosphoric acid (d=1.7 g/cu.cm) 8.3-12.3; surface-active substance 0.1- 0.5; complex-forming additive 0.01-0.5; sulphosalicylic acid 0.1-1.5; acetone 4.0-10.0 ammonium hydroxide 0.2-0.6, nitrogenacidic zinc 0.2-1.0; water being the balance. Citric acid can be use as complex-forming additive. EFFECT: expanded application field, improved working characteristics. 2 cl, 1 tbl
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