ATEX Labeling

All ATEX certified products need to have an ATEX label explaining the criteria that it meets. The downloadable sheet below explains the labeling structure with examples to clearly understand the ATEX labeling.

Understanding ATEX labels

Understanding ATEX labels - Produced by Tameson

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Auto-Ignition Temperatures for Gases and Dusts

The tables below are a non-exhaustive list of common gases and dusts with their temperature classes and auto-ignition temperatures.

Gas Group Temperature Class
T1 T2 T3 T4 T6
I Methane
IIA Acetone Ethanol Diesel Fuel Acetaldehyde Ethyl Nitrite
Methane Cyclohexane Aircraft Fuel Ethyl Ether
Ethane Propanol 2 Fuel Oil
Benzene N-Butyl Alcohol N-Hexane
Methanol N-Butane Heptane
Toluene Kerosene
Acetic Acid Petrol
Ammonia
Propane
Methylene Chloride
Carbon Monoxide
IIB Coal Gas Ethylene Ethylene Glycol Ethyl Methyl Ether
City Gas Ethylene Oxide Hydrogen Sulphide
Acylic Nitrile Propanol 1 Tetrahydofuran
Methyl Ethyl Ketone
Carbon Hydrogen
IIC Hydrogen Acetylene Carbon Disulphide



Ignition Temperatures for Common Flammable Dusts and Fibers
Material Ignition Temperature
Cloud Layer
Coal Dust 380˚C 225˚C
Polythene 420˚C (melts)
Methyl Cellulose 420˚C 320˚C
Starch 460˚C 435˚C
Flour 490˚C 340˚C
Sugar 490˚C 460˚C
Grain Dust 510˚C 300˚C
Phenolic Resin 530˚C > 450˚C
Aluminum 590˚C > 450˚C
PVC 700˚C > 450˚C
Soot 810˚C 570˚C

Additional Information

Click one of the links below for more information: