n-Butane and iso-butane
n-Butane and iso-butaneButane and isobutane are propellants and packaging gases for aerosol food products, used where propane alone would give the wrong pressure.
Where it is and isn’t permitted
| Jurisdiction | Status | Scope and limits | Citation |
|---|---|---|---|
| United States | Permitted | 21 CFR 184.1165retrieved 2026-09-07 | |
| Codex Alimentarius | Not listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited. |
What it is made from
Separated from natural gas processing and petroleum refining.
- Vegan
- Vegetarian
Every name it appears under
1 recorded name. A label may use any of them.
As it appears in regulation
- n-Butane and iso-butane
Hazard reference values
No reference value for this substance in the sources we hold.
Evidence and how bodies read it
Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.
Sources for this page
- ecfr retrieved 2026-09-07
Full licence terms and publisher details on Sources. How this page is built and updated: Method.
Machine-readable:/api/v1/additives/n-butane-and-iso-butane.json