Is Barium bis[4-[(2-hydroxy-1-naphthyl)azo]-2-methylbenzenesulphonate] vegan?

Pigment Red 51 is also known as Barium bis[4-[(2-hydroxy-1-naphthyl)azo]-2-methylbenzenesulphonate].

CI 15580 is a synthetic monoazo colorant, chemically the barium salt of a naphthol sulfonate azo dye, used as a coloring agent in cosmetics.

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