2-Octadecyl-1-(2-(carbamyloxy)ethyl)imidazolium, monoethylphosphate 67815-94-5 EINECS 267-203-6 Ethyl dihydrogen phosphate, compound with 2-(2-octadecylimidazolidin-1-yl)ethyl carbamate (1:1) Phosphoric acid, monoethyl ester, compd. with 2-(2-octadecyl-1-imidazolidinyl)ethyl carbamate (ester) (1:1)