Abstract: As a general-purpose aqueous cleaning agent composition which has excellent oil separability adaptable even to water soluble machining oils, the present invention provides an aqueous cleaning agent composition including an emulsifying agent that removes an oil component from a member subjected to cleaning to which the oil component is adhering and emulsifies the oil component, a separating agent comprised of an anionic polymer and a separating auxiliary agent comprised of a cationic surfactant. It is preferred that the molecular weight of the anionic polymer is 1500 to 50000. It is also preferred that the HLB value of the separating auxiliary agent is a value of 26 or more as defined by the Davies' method.

Abstract: As a method for producing a degreasing composition in the form of a slurry, crystallization of the composition during low-temperature storage being suppressed and the composition being used for preparing a cleaning liquid having little environmental impact, provided is a method including a step of obtaining a slurry by mixing a first liquid and a powdery silicate having a particle diameter ranging from 0.2 mm to 10 mm, wherein the first liquid contains an alkaline component composed of at least one of sodium hydroxide and potassium hydroxide, an alcohol having three or fewer carbon atoms, and water; and the degreasing composition contains, with respect to the total composition, 10 mass % to 60 mass % of the alkaline component, 0.1 mass % to 5 mass % of the alcohol, 1 mass % to 50 mass % of the silicate, and 20 mass % to 50 mass % of water including hydration water of the silicate, and contains no chelating agent.