(p-Ammoniophenyl)ethyl(2-hydroxyethyl)ammonium sulphate 4327-84-8 79304-39-5 EINECS 224-361-0 Ethanol, 2-((4-aminophenyl)ethylamino)-, sulfate (1:1) (salt) N-Ethyl-N-(2-hydroxyethyl)-p-phenylenediamine sulfate