Is Disodium [.mu.-[[7,7'-iminobis[4-hydroxy-3-[[2-hydroxy-5-(N-methylsulphamoyl)phenyl]azo]naphthalene-2-sulphonato]](6-)]]dicuprate(2-) vegan?

Direct Violet 48 is also known as Disodium [.mu.-[[7,7'-iminobis[4-hydroxy-3-[[2-hydroxy-5-(N-methylsulphamoyl)phenyl]azo]naphthalene-2-sulphonato]](6-)]]dicuprate(2-).

Direct Violet 48 is a synthetic azo-copper complex dye used as a colorant, identified by Colour Index number CI 29125.

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