Alginic acid

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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alginic acid; alginic acid (INCI); CAS No 9005-32-7

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Alginic acid is a white substance that occurs mainly in algae (especially brown algae) and is insoluble in water and soluble in aqueous solutions. Similar to pectins, the substance consists of a chain of glycosidically linked mannuronic and guluronic acid. The salts of alginic acid are called alginates.

Field of application/use
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Food additive (E 400)


gelling, coating and thickening agents (alginic acid can absorb up to 300 times its weight in water)

Other medical uses see below alginates


Last updated on: 29.10.2020