Synonyms: 1,3-Benzenedisulfonicacid, 4,5-dihydroxy-, disodium salt (9CI);m-Benzenedisulfonic acid, 4,5-dihydroxy-,disodium salt (6CI,8CI);1,2-Dihydroxybenzene-3,5-disulfonic acid disodiumsalt;3,5-Disulfocatechol disodium salt;4,5-Dihydroxy-m-benzenedisulfonic aciddisodium salt;4,5-Dihydroxybenzene-1,3-disulfonic acid disodium salt;Disodium1,2-dihydroxybenzene-3,5-disulfonate;Disodium4,5-dihydroxy-m-benzenedisulfonate;Disodium4,5-dihydroxybenzene-1,3-disulfonate;Disodium catechol-3,5-disulfonate;Disodium pyrocatechol-3,5-disulfonate;SDD;Sodium1,2-dihydroxy-3,5-benzenedisulfonate;Sodium pyrocatechol-3,5-disulfonate;Tiferron;Tiron;WAS-21;