Last reviewed May 2026 · 1 min read
Is Isobutane vegan?
Also known as: E943b
E-number: E943b
Vegan
Suitable for a vegan diet.
In short
Yes — Produced from petroleum.
01 · The basics
What is Isobutane?
A gas used as a propellant in aerosol sprays.
02 · The source
Where it comes from
Produced from petroleum. 100% vegan.
Frequently asked
FAQ
Is isobutane vegan?
Yes, it is synthetic.
Commonly found in
Deodorant spraysHairsprayCooking sprays
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