[Experimental substantiation of maximum allowable concentration of phosphoric acid in the water of reservoirs].

It has been found out on the basis of experimental studies, that the threshold concentration of phosphorous acid is 85.7 mg/l according to the influence on organoleptic water properties, I mg/l--according to the influence on the sanitary regimen of water reservoirs. The preparation is of low toxicity when administered perorally to laboratory animals, cumulation degree is medium. Embryotoxic and gonadotoxic effects, mutagenic and allergic properties have not been detected. The maximum no-effect dose in the chronic experiment is 1.4 mg/kg. MAC is recommended on the level of I mg/l according to the general sanitary indicator of harmfulness (the 3-d class of danger).