5-Chloro-4-ethyl-3-((2-hydroxy-1-naphthalenyl)azo)benzenesulfonic acid, barium salt (2:1) 67892-38-0 Barium bis(3-chloro-4-ethyl-5-((2-hydroxy-1-naphthyl)azo)benzenesulphonate) Benzenesulfonic acid, 3-chloro-4-ethyl-5-((2-hydroxy-1-naphthalenyl)azo)-, barium salt (2:1) EINECS 267-570-2