| abstract |
(57) [Summary] [Structure] In the tank of the washing machine, an aqueous phase in which the content of organic substances derived from the cleaning agent is lower than the oil phase and an oil phase in which the content of organic substances derived from the cleaning agent is higher than the aqueous phase are formed, A cleaning method for cleaning an object to be cleaned using the aqueous phase, and a cleaning agent used in the cleaning method. [Effects] According to the present invention, it is possible to obtain a high cleaning property by properly maintaining the cleaning agent concentration without performing a complicated operation such as measuring the concentration of the cleaning agent component using the aqueous cleaning agent. Also, when an oil phase is formed in the lower layer, a fire associated with ignition, It is possible to prevent the danger of explosion and the deterioration of working environment such as odor due to volatilization of organic substances. |