1H-Benzimidazolesulfonic acid, 2-heptadecyl-1-((sulfophenyl)methyl)-, disodium salt 31135-57-6 52470-46-9 Disodium 2-heptadecyl-1-((sulphonatophenyl)methyl)-1H-benzimidazolesulphonate EINECS 250-479-7