PROBLEM TO BE SOLVED: To provide a sterilizing detergent composition having a sterilizing effect on Eumycetes and general bacteria, and having a high detergency.SOLUTION: The sterilizing detergent composition contains a compound represented by formula (I) and a nonionic surfactant, and is composed of an aqueous solution of 7 to 12 in pH. In the formula, R1 is a 1-3C saturated linear alkyl group R2 is an 8-12C saturated linear alkyl group X- is a halogen ion and Y is an 8-12C saturated linear alkylene group.COPYRIGHT: (C)2013,JPO&INPIT【課題】真菌類および一般細菌に対して殺菌効果を有すると共に、高い洗浄力を有する殺菌洗浄剤組成物を提供すること。【解決手段】式(I)の化合物および非イオン界面活性剤を含有し、かつ、pHが7~12である水溶液からなる殺菌洗浄剤組成物を提供する:(I)[式中、R1は炭素数1~3の飽和直鎖アルキル基、R2は炭素数8~12の飽和直鎖アルキル基、X-はハロゲンイオン、Yは炭素数8~12の飽和直鎖アルキレン基を表す]。【選択図】なし