... detergent, 3.toilet soap and soap. Optical Brightener CXT Description:Optical Brightener CXT is regarded as one of the ... fiber and fabrics, showing nionic characters and has optical blue color.It has better resistence to chloride ... and 31#,the most favorable dyeing bath pH value is 7-10. Its sunlight fastness is 4 ... ,Whitening Agent,Fluorescent Whitening Agents,Optical Brightene Optical Brightener CXT