5,9,14,18-Anthrazinetetrol, 7,16-dichloro-6,15-dihydro-, tetrakis(hydrogen sulfate) (ester), tetrapotassium salt 54077-86-0 EINECS 258-962-4 Tetrapotassium 7,16-dichloro-6,15-dihydroanthrazine-5,9,14,18-tetrayl tetrakis(sulphate)