63467-26-5 Benzenesulfonic acid, 5-chloro-4-ethyl-2-((2-hydroxy-1-naphthalenyl)azo)-, monosodium salt Benzenesulfonic acid, 5-chloro-4-ethyl-2-((2-hydroxy-1-naphthalenyl)azo)-, sodium salt EINECS 264-233-1 Sodium 5-chloro-4-ethyl-2-((2-hydroxy-1-naphthyl)azo)benzenesulphonate