72187-18-9 Disodium ((9,10-dihydro-9,10-dioxoanthracene-1,4-diyl)diimino)bis(1,2,3,4-tetrahydronaphthalenesulphonate) EINECS 276-444-6 Naphthalenesulfonic acid, ((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(1,2,3,4-tetrahydro-, disodium salt