INDUSTRIAL ANTISEPTIC AND MILDEWPROOFING AGENT

PURPOSE:An industrial antiseptic and mildewproofing agent for purposes except for city water, showing improved effect with a small amount of germicide, comprising 4,5-dichloro-1,2-dithiol-3-one as an active ingredient of industrial germicide and a polyvalent metal salt as an effect enhancing component. CONSTITUTION:4,5-Dichloro-1,2-dithiol-3-one shown by the formula as an active ingredient of an industrial germicide for preventing contamination caused by bacteria, fungi, etc. attaching themselves to various industrial products, etc. is blended with preferably an aqueous solution of a polyvalent metal salt such as Al, Mn, ferric, ferrous iron, Ni, Cu, Zn, Sn, etc., as an effect enhancing component. A blending ratio of the polyvalent metal salt is preferably 0.1-100 calculated as the polyvalent metal salt based on 1 compound shown by the formula by weight ratio. The preparation in a liquid state is easily handleable and commonly preferable, and an amount of the preparation added is sufficiently 0.05- 1.0wt% calculated as the active ingredient based on industrial product such as various coating compounds, wall materials, high polymer plastics, etc. for purposes except for city water.