2,2'-Dihydroxy-4,4'-dimethoxy-5,5'-disulfobenzophenone, disodium salt 64719-73-9 76656-36-5 Benzenesulfonic acid, 3,3'-carbonylbis(4-hydroxy-6-methoxy-, disodium salt Disodium 3,3'-carbonylbis(4-hydroxy-6-methoxybenzenesulphonate) EINECS 278-520-4 Uvinuc ds 49