The invention relates to a novel fungicidal agent in the form of a salt associate having the structural formula shown. The agent can be used for treating diseases caused by fungi, and also for preventing fungal damage to various materials and agricultural products. The present fungicidal agent is an associate of 5-[3,5-dichloro-2-hydroxy benzylidene)amino]-4-hydroxy-1H-pyrimidine-2-on with 1,2,3,4,5-pentahydroxy-6-methylaminohexane and has the formula (I). This fungicidal agent exhibits a broad range of activity and high solubility, which increases the effectiveness of the use thereof in the form of solutions. Compounds were obtained in a crystalline form, and the structure thereof was established by means of magnetic resonance spectra in dimethyl sulfoxide.
