Last reviewed May 2026 · 1 min read
Is Propylene Glycol vegan?
Also known as: 1,2-propanediol, E1520
E-number: E1520
Vegan
Suitable for a vegan diet.
Yes — It is a synthetic, petrochemical product.
01 · The basics
What is Propylene Glycol?
A synthetic liquid that absorbs water, used as a solvent for food colors and flavors, and to keep baked goods moist.
02 · The source
Where it comes from
It is a synthetic, petrochemical product. Despite scary-sounding chemical names, it involves zero animal exploitation or ingredients.
03 · Alternatives
Best vegan alternatives
Vegetable glycerin
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Frequently asked
FAQ
Is propylene glycol antifreeze?
It is used in non-toxic antifreeze, but the food-grade version is perfectly safe and heavily regulated. It has no relation to the toxic ethylene glycol.
Is E1520 vegan?
Yes, E1520 is produced synthetically from petroleum and is 100% vegan.
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