This invention provides a sterilizer composition comprising the compound of forThis invention provides a sterilizer composition comprising the compound of formula (I) and triethanolamine. [wherein, R1 represents a saturated linear alkyl group having a carbon number of 1 to 3, R2 represents a saturated linear alkyl group having a carbon number of 8 to 12, X- represents a halogen ion, Y represents a saturated linear alkylene group having a carbon number of 8 to 12]. Further, this invention provides a sterilizing detergent composition comprising the compound of formula (I), non-ionic surfacant, and triethanolamine.
