Nonionic surfactants SUR can be used for increase solubility and bioavalability poor dissolved biologically active material. In this work we have used spectrophotometrical method and studied the solubilyzation of biologically active substance, having antibacterial and fungicide activity, 5,7-dichloro-4,6-dinitrobenzofuroxan in water system of nonionic SUR/ It is shown different type of solubility dependencies from surfactant’s concentrations for different SUR. Solubility was characterized by terms of molar solubilyzation ratio, micellar-water partitution coefficient. We have shown the following order of solubilyzation efficiency: Brij 56 < Tr X 100
солюбилизация, критическая концентрация мицеллообразования, поверхностно-активные вещества, неонолы Brij 56, 1,1,3,3-тетраметилбутилфеноксиполиэтиленгликоль Tr X-100, 5,7-дихлор-4,6-динитробензфуроксан., solubilyzation, critical micellar concentration, surfactant, benzofuroxans, Brij 56, Tr X-100, oxiethylated nonylphenoles
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