1(3H)-Isobenzofuranone, 3,3-bis(4-(sulfooxy)phenyl)-, dipotassium salt 205237-62-3 52322-16-4 66389-38-6 Dipotassium 1-oxo-3H-isobenzofuran-3,3-diylbis(p-phenylene) bis(sulphate) EINECS 257-849-7