1,Chemical name : 4,4'aaDiaminostilbeneaa2,2'aaDisulfonic acid 2,Commodity name : DSD ACID 3,Structural Formula : 1,Chemical name : 4,4'–Diaminostilbene ... oxidized red in air .There is similar properties with aromatic acid and amine .7,Specifications : ItemMoist productsDry productsAppearanceLight yellow pasteLight yellow ... : 25kg/450kg/500kg/bag or at customer's option . DSD ACID