Reference Source

Hydrogen

For Hydrogen, classification system is IEC / ATEX; apparatus / gas group is IIC; temperature class is T1; ignition temperature (c) is 560, recorded from its source on 2026-08-06.

Substance
Hydrogen verified
Classification system
IEC / ATEX our reading
Apparatus / gas group
IIC
Temperature class
T1 verified
Ignition temperature (C)
560 verified
Sourcecortemgroup.com
Verified
Review by
DatasetGas group, temperature class and autoignition temperature by substance

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

Hydrogen, which has an auto-ignition temperature of 560° C, will be classified in the T1 temperature class.

cortemgroup.com, retrieved 2026-08-06

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.