Is Propane-1,2-diol Alginate vegan?
Propane-1,2-diol Alginate
Propane-1,2-diol alginate (propylene glycol alginate) is an ester of alginic acid, a polysaccharide derived from brown seaweed, and propylene glycol. It is used as an emulsifier, stabiliser, and thickener in food and cosmetic products.
| Also known as | Alginic acid, ester with 1,2-propanediol, Gamma-Polyglutamic Acid, PGA, Propylene glycol alginate, Propylene glycol ester of alginic acid |
|---|---|
| INCI name | Propane-1,2-diol Alginate |
| E number | E405 |
| INS number | 405 |
| CAS number | 57-55-6 |
| CosIng ID | 37270 |
| Last reviewed | 22 April 2026 |
An ingredient is considered vegan if it contains no animal-derived components at any point in its production.
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