4-((1-Hydroxy-6-((((5-hydroxy-6-(phenylazo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-sulfo-2-naphthalenyl)azo)benzoic acid tris(ethoxylated triethanolamine) salt 72987-47-4 Benzoic acid, 4-((1-hydroxy-6-((((5-hydroxy-6-(phenylazo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-sulfo-2-naphthalenyl)azo)-, compd. with alpha,alpha',alpha''-(nitrilotri-2,1-ethanediyl)tris(omega-hydroxypoly(oxy-1,2-ethanediyl)) (1:3)