PROBLEM TO BE SOLVED: To provide a bactericidal composition exhibiting excellent bactericidal effects even on spores of bacteria, and capable of removing protein stain and scale stain.SOLUTION: The bactericidal composition comprises (A) an organic carboxylic acid, (B) an inorganic acid and (C) a quaternary ammonium salt. Preferably, the ratio (A)/(B) of the organic carboxylic acid (A) to the inorganic acid (B) by mass is 0.1-200, and the ratio (C)/(B) of the quaternary ammonium salt (C) to the inorganic acid (B) by mass is 0.1-50.COPYRIGHT: (C)2009,JPO&INPIT【課題】細菌芽胞に対しても優れた殺菌効果を示し、たんぱく質汚れやスケール汚れを除去できる殺菌剤組成物を提供する。【解決手段】(A)有機カルボン酸、(B)無機酸及び(C)4級アンモニウム塩を含有する殺菌剤組成物。【選択図】なし
