ATEX Labeling
Working in hazardous areas where flammable gases, vapors, mists, or dusts are present requires specific safety measures. ATEX labeling is a technical identification system that informs users about the explosion protection features of equipment. This label helps ensure the safe selection and use of equipment in potentially explosive environments. 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.
Auto-ignition temperatures for gasses 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 |