Low-temperature scouring and bleaching agent as well as preparation method and application thereof

The invention discloses a low-temperature scouring and bleaching agent as well as a preparation method and application thereof. The low-temperature scouring and bleaching agent is prepared from the components in percentage by mass: 0.5 percent to 5 percent of a main catalyst copper complex, 1 percent to 10 percent of an auxiliary catalyst organic activating agent, 8 percent to 15 percent of an alkali-resisting permeation scouring agent, 4 percent to 8 percent of a chelating dispersing agent, 0.05 percent to 0.1 percent of a 10-percent organic silicon defoaming agent and the balance water. Theobtained low-temperature scouring and bleaching agent is matched with caustic soda and hydrogen peroxide so as to be used for pretreatment of a cotton fabric, a working solution is soaked or padded, and then water washing, dehydration and drying are conducted to complete pretreatment. According to the low-temperature scouring and bleaching agent as well as the preparation method and the application thereof provided by the