74204-30-1 C.I. Reactive Blue 52 Cuprate(3-), (2-((2-((2-(hydroxy-kappaO)-5-sulfo-3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)imino-kappaN)-1-phenylethyl)azo-kappaN1)-5-sulfobenzoato(5-)-kappaO)-, disodium hydrogen Cuprate(3-), (2-((2-((2-hydroxy-5-sulfo-3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)imino)-1-phenylethyl)azo)-5-sulfobenzoato(5-))-, disodium hydrogen Disodium hydrogen (2-((2-((2-hydroxy-5-sulpho-3-((2,5,6-trichloro-4-pyrimidinyl)amino)phenyl)imino)-1-phenylethyl)azo)-5-sulphobenzoato(5-))cuprate(3-) EINECS 277-768-0