# Ethanol — Gas group, temperature class and autoignition temperature by substance

For Ethanol, classification system is IEC / ATEX; apparatus / gas group is IIA, recorded from its source on 2026-08-06.

- **Substance:** Ethanol _(verified: appears in the quote below)_
- **Classification system:** IEC / ATEX _(our reading, not quoted from the source)_
- **Apparatus / gas group:** IIA _(verified: appears in the quote below)_

## What the source says

> IIA | >0.90 | >0.80 | Methane, propane, butane, acetone, ethanol, benzene, diesel, ammonia

## Source

- https://exknowledge.com/pages/gas-groups.html

Last verified: 2026-08-06. Review by: 2028-08-05.
Part of [Gas group, temperature class and autoignition temperature by substance](https://referencesource.org/hazardous-area-substance-classification/).