CheckVegan

Is Acid Red 4 vegan?

Acid Red 4

Vegan Vegan
Vegetarian Vegetarian

Azo-Eosin (Acid Red 4; Azoeosin G) is a synthetic azo dye used in histological staining and textile applications. It is classified under the Colour Index as CI 14710.

Also known as Acid red 4, Azoeosin G
CAS number 5858-39-9
CI number CI 14710
Last reviewed 3 June 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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