... 4,4'aaDiaminostilbeneaa2,2'aaDisulfonic acid 2aaCommodity name : DSD ACID 3aaStructural Formula : DSD ACID1,Chemical name : 4,4'– ... Diaminostilbene–2,2'–Disulfonic acid2,Commodity name : DSD ACID3,Structural Formula : 4 ... .There is similar properties with aromatic acid and amine .7,Specifications : ItemMoist ...