62147-77-7 Poly(oxy-1,2-ethanediyl), alpha,alpha'-(((4-((2,5-disulfophenyl)azo)phenyl)imino)di-2,1-ethanediyl)bis(omega-hydroxy-, disodium salt Poly(oxy-1,2-ethanediyl), alpha,alpha'-(((4-(2,5-disulfophenyl)azo)phenyl)imino) Poly(oxy-1,2-ethanediyl), alpha,alpha'-(((4-(2,5-disulfophenyl)azo)phenyl)imino)di-2,1-ethanediyl)bis(omega-hydroxy-, disodium salt