2,6-Anthracenedisulfonic acid, 9,10-dihydro-1,5-dihydroxy-9,10-dioxo-4,8-bis((sulfomethyl)amino)-, tetrasodium salt 6370-93-0 EINECS 228-892-9 Tetrasodium 9,10-dihydro-1,5-dihydroxy-9,10-dioxo-4,8-bis((sulphonatomethyl)amino)anthracene-2,6-disulphonate