FIELD: pharmaceutical industry. SUBSTANCE: aqueous solution of polycarboxylic acid is treated with anesthetic substance in basic or mineral salt form to form their complexes. aqueous solution of complex is evaporated to dry to yield powdered solid phase. Installation comprises complex synthesis module and, connected to it by transportation means, module where complex is isolated from aqueous solution. EFFECT: reduced expenses on transportation and storage. 2 cl, 1 dwg
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