(2-((4-((2-Chloro-4-nitrophenyl)azo)phenyl)ethylamino)ethyl)trimethylammonium hydrogen sulphate 85187-94-6 EINECS 286-184-5 Ethanaminium, 2-((4-((2-chloro-4-nitrophenyl)azo)phenyl)ethylamino)-N,N,N-trimethyl-, sulfate (1:1)