1. A composition comprising: 2,6-dimethyl-m-dioxan-4-ol acetate iizotiazolinonovoe biocidal soedinenie.2. A composition according to claim 1, wherein izotiazolinonovoe biocidal compound is a compound of formula I: wherein R and independently represent hydrogen, halogen or C-alkyl, or R and together with the carbon atoms to which they are attached form a C-ring or an aryl Stsikloalkilnoe group and Y represents H, C alkyl, C cycloalkyl, aryl or aralkil.3. A composition according to any one of claims 1 and 2, wherein izotiazolinonovoe biocidal compound is 5-chloro-2-methyl-3-isothiazolinon 2-methyl-3-isothiazolinon 2-ethyl-3-isothiazolinon 5-chloro-2-ethyl-3-isothiazolinon 4,5-dichloro-2-methyl-3-isothiazolinon 2-n-octyl-3-isothiazolinon 4,5-dichloro-n-octyl-3-isothiazolinon 1,2-benzisothiazol-3-one 2-methyl-4,5-trimethylene-4-isothiazolin-3-one or mixtures of two or more of nih.4. A composition according to any one of claims 1 and 2, wherein izotiazolinonovym biocidal compound is 1,2-benzisothiazol-3-one, and wherein the weight ratio of 2,6-dimethyl-m-dioxan-4-ol acetate to 1,2-benzisothiazol-3 -on is from about 50: 1 to about 1: 4.5. A composition according to any one of claims 1 and 2, wherein izotiazolinonovym biocidal compound is a mixture of 5-chloro-2-methyl-3-isothiazolinone and 2-methyl-3-isothiazolinone, and wherein the weight ratio of 2,6-dimethyl-m-dioxan 4-ol acetate in a mixture of 5-chloro-2-methyl-3-isothiazolinone and 2-methyl-3-isothiazolinone is from about 900: 1 to about 10: 1.6. A composition according to any one of claims 1 and 2, wherein izotiazolinonovym biocidal compound is 2-methyl-3-isothiazolinon, and wherein the weight ratio of 2,6-dimethyl-m-dioxan-4-ol acetate to 2-methyl-3-isothiazolinone is from about 170: 1 to about 2: 1.7. A method for controlling microorganisms in1. Композиция, содержащая:2,6-диметил-м-диоксан-4-олацетат иизотиазолиноновое биоцидное соединение.2. Композиция по п.1, где изотиазолиноновое биоцидное соединение представл
