Main Ingredients?: Sodium methylenedinaphthalene disulphonate Uses ?1, As a Dispersant of disperse and vat dyes and filler for standard. Or used as Diffusant of color lake. 2, used in the tie dyeing of vat dyes, and the dyeing of disperse and soluble vat dyes. 3, as a stabilizer of latex in rubber industry, tanning agent of leather industry. 4, water reducing agent of concrete. Packing and Storage 40kg plastic bag, Stored at room temperature in dark place, Storage period is one year.