Laundering pretreatment composition for clothing

摘要

The present invention provides a prewashing treatment composition for clothes ensuring that superb washing ability is obtained by washing after it is applied to materials to be washed. The prewashing treatment composition comprises (a) a surfactant, (b) a chelating agent having a specified calcium-chelating capacity and a specified stability constant of calcium complex and a molecular weight of 1000 or less, (c) water and (d) an alkali agent in each specified ratio, and has a pH of 7.5 to 12 at 20° C.