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Is Direct Sky Blue 5B vegan?

Direct Sky Blue 5B

Vegan

Direct Sky Blue 5B is a synthetic direct azo dye used for dyeing cellulosic fibres such as cotton. It is also known as Direct Blue 15 in the Colour Index. It is a fully synthetic compound.

Also known as Direct Blue 15, Direct Sky Blue FB
CAS number 2429-74-5
EC number 219-385-1
CI number CI 22400
Last reviewed 3 June 2026

Sources

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