PROBLEM TO BE SOLVED: To provide an effective component exhibiting an excellent controlling effect against harmful microorganisms such as bacteria, fungi, yeasts, algae, etc., and a bactericidal composition for an industrial use, containing such the effective component.SOLUTION: This isothiazoline compound expressed by general formula (1) [wherein, R1 is a 1-20C alkyl and Xs are each the same or different and a halogen atom] is incorporated in the industrially used bactericidal composition.COPYRIGHT: (C)2008,JPO&INPIT【課題】細菌、カビ、酵母、藻などの有害微生物に対して優れた防除効果を発現する有効成分と、かかる有効成分を含有する工業用殺菌組成物とを提供すること。【解決手段】工業用殺菌組成物に、下記一般式(1)で示されるイソチアゾリン化合物を含有させる。【化1】(一般式(1)中、R1は、炭素数1~20のアルキル基を示し、Xは、同一または互いに異なってハロゲン原子を示す。)【選択図】なし
