CheckVegan

Is Maleic Acid vegan?

Maleic Acid

Vegan Vegan
Vegetarian Vegetarian

Maleic acid, or cis-butenedioic acid, is a dicarboxylic acid with the formula HO2CCH=CHCO2H. It is produced synthetically, primarily from maleic anhydride, and used as a chemical intermediate and pH adjuster.

Also known as 2-Butenedioic acid (2Z)-, Acidum maleicum
INCI name Maleic Acid
CAS number 110-16-7
EC number 203-742-5
CosIng ID 35135
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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