... Acid , content 96% min ISO9000 best price and service 4,4-Diaminostilbene-2,2-disulfonic acid Trade name: DSD acid Molecular formula: C14H14N2O6S2Molecular weight ... : 370.4 Property: 1)Light yellow cream or powder, ... in 40kg woven bag or upon clients' request. DSD acid /4,4-Diaminostilbene-2,2-disulfonic acid