72906-64-0 Cuprate(3-), (mu-(4-((3,3'-dihydroxy-4'-((2-hydroxy-6-sulfo-1-naphthalenyl)azo)(1,1'-biphenyl)-4-yl)azo)-3-hydroxy-2,7-naphthalenedisulfonato(7-)))di-, trihydrogen, compd. with 2,2'-iminobis(ethanol) (1:3) EINECS 277-010-9