A malleable compound according to the invention for use as a disinfectant comprises water, 25 to 40% by weight of a solvent component comprising low-molecular, water-miscible alcohols, 1 to 10% by weight of an active bactericidal component, 3 to 6% by weight hydroxypropylated polygalactomannan with an etherification level of between 0.3 and 1.5 and 0.1 to 0.5% by weight boracic acid or an equivalent amount of boron ions.