Is Calcium 3-Hydroxy-4-[(1-sulphonato-2-naphthyl)azo]-2-naphthoate vegan?

Pigment Red 63:1 is also known as Calcium 3-Hydroxy-4-[(1-sulphonato-2-naphthyl)azo]-2-naphthoate.

Pigment Red 63:1 (CI 15880) is a synthetic monoazo pigment, chemically the calcium salt of 3-hydroxy-4-[(1-sulphonato-2-naphthyl)azo]-2-naphthoic acid, used as a colorant in cosmetics and other products.

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