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

For Ethylene, classification system is IEC / ATEX; apparatus / gas group is IIB; ignition temperature (c) is 450; ignition temperature (f) is 842, recorded from its source on 2026-08-06.

- **Substance:** Ethylene _(verified: appears in the quote below)_
- **Classification system:** IEC / ATEX _(our reading, not quoted from the source)_
- **Apparatus / gas group:** IIB _(verified: appears in the quote below)_
- **Ignition temperature (C):** 450 _(verified: appears in the quote below)_
- **Ignition temperature (F):** 842 _(verified: appears in the quote below)_

## What the source says

> Ethylene | C | 450 | 842 | 1,200 PSI | IIB

## Source

- https://ldpi-inc.com/resources/classification-codes/class-1-locations/

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/).