1,7-Naphthalenedisulfonic acid, 4-((2,4-dichlorobenzoyl)amino)-5-hydroxy-6-((2-methoxyphenyl)azo)-, barium sodium salt (1:1:2) 68929-14-6 Barium disodium 4-(2,4-dichlorobenzamidato)-6-((o-methoxyphenyl)azo)-5-oxidonaphthalene-1,7-disulphonate EINECS 273-043-8