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Report a problem with Tetrasodium [2-[2-[4-[[2,6-dihydroxy-3-[(2-hydroxy-5-sulphophenyl)azo]phenyl]azo]-2-sulphophenyl]vinyl]-5-[[4-[(4-sulphophenyl)azo]phenyl]azo]benzenesulphonato(6-)]cuprate(4-) (EC: 273-456-3).

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