Uses 　　It has good resistance to acid, alkali and hard water, Can be used as anti-whitening agent in the resist printing of vat dyes; the color light protective agent in the printing and padding of Reactive Dyes. It also can be used as repairing agent of pattern fabrics and white-grounding protective agent of dyed yarns of vat dyes Packing and Storage 25kg woven bag lined with plastic bag, Stored at room temperature in dark place, Storage period is one year