A newly synthesized peroxosolvate, ammonium sulphate peroxosolvate, can be used in disinfectology and other areas along with other hard forms of hydrogen. Optimal conditions for ammonium sulphate peroxosolvate synthesis were determined by this study. It was established that (NH4)2SO4 . H2O2 stabilized with carboxylic acids did not lose active oxygen when stored in dry atmosphere. The sporocidal activity of the compound against the suspension of B. cereus var. anthracoides 250 was studied. The results demonstrate that thanks to the high decontaminating activity of the solvate its solutions can be used to produce disinfecting preparations.