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Is o-Aminophenol Sulfate vegan?

o-Aminophenol Sulfate

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Vegetarian Vegetarian

o-Aminophenol sulfate is the sulfate salt of a synthetic aromatic amino phenol used as an oxidative hair dye intermediate. It is manufactured chemically and is not of animal or plant origin.

Also known as Phenol, 2-amino-, sulfate (2:1) (salt)
INCI name o-Aminophenol Sulfate
CAS number 55-55-0
EC number 267-335-4
CosIng ID 35573
Last reviewed 9 July 2026

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

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