1,8-Naphthalenedisulfonic acid, 4,5-bis(1-methylethyl)-, disodium salt 4,5-Diisopropyl-1,8-naphthalenedisulfonic acid, disodium salt 67952-45-8 Disodium 4,5-bis(isopropyl)naphthalene-1,8-disulphonate EINECS 267-899-1