Table 1
Gas group classification.
ESE CENELEC EN 50014 IS.2148-IEC79.1.BS4683 USA NEC (National Electrical Code)
Products Group Products Group Products Class Division Group
   Methane
  (fire damp)
I    Methane
  (fire damp)
I  Inflammabe fibres and
 cloth
III 1 - 2  
 Combustible powders II 1 - 2 EFG
 Acetone
 Industrial methane
 Ethyl acetate
 Methanol
 Butane
 Propane
 Hexane
 Ammonia
 Carbon monoxide,
 Pentane,
 Heptane,
 Iso-octane,
 Decane,
 Benzene,
 Xylene,
 Cyclohexane,
 Ethyl
 Methyl acetate,
 N-Propyl acetate,
 N-butyl acetate,
 Amyl acetate,
 Ethyl nitride
 Ethanol
 Methyl Ketone
 Ethyl Nitride
IIA
 

 

 

 

 

 

 Acetone
 Industrial methane
 Ethyl acetate
 Methanol
 Butane
 Propane
 Hexane
 Ammonia
 Carbon monoxide,
 Pentane,
 Heptane,
 Iso-octane,
 Decane,
 Benzene,
 Xylene,
 Cyclohexane,
 Ethyl
 Methyl acetate,
 N-Propyl acetate,
 N-butyl acetate,
 Amyl acetate,
 Methylene  chloride,
 Butanol,
 Ethyl nitride,
 Isobutanol,
 Amyl alcohol,
 Butyl alcohol,
 Ethyl alcohol,
 Blast furnace gas
IIA
 

 

 

 

 

 

 Methane
 Acetone
 Butyl alcohol
 Ethyl alcohol
 Ethyl acetate
 Methanol
 Butane
 Propane
 Hexane
 Acrylonitride
 ammoniac gas,
 Benzene,
 Butyl alcohol2,
 Butyl acetate,
 Isobutyl acetate,
 Ethane,
 Ethylene chloride,
 Petrol,
 Hepptane,
 Isoprene,
 Iso-amyl alcohol,
 Ethylethylketone,
 Methylisobutylketone,
 Isobutyl alcohol,
 3-butyl alcohol,
 Petroleum naptha
 Octanes,
 Pentanes,
 Amyl alcohol,
 Propylene,
 Isopropyl alcohol,
 Propyl alcohol
 Styrene,
 Toluene,
 Vinyl acetate,
 Vinyl chloride,
 Xylene
I 1 - 2 D
 Ethylene
 Butadiene 1.3,
 Diethyl ether,
 Ethylene oxide,
 Coke oven gas
IIB  Ethylene
 Butadiene 1.3,
 Ethylene oxide,
 Coke oven gas,
 Town gas,
 Diethyl ether,
IIB  Ethylene
 Acetaldehyde
 Cyclopropane,
 Di-ethyl ether,
 Asymmetric dimethyl.
 Hydrazine (UDMH1).
I 1 - 2 C
Hydrogen IIC IIB
+
H2
 Hydrogen
 Carbon disulphide
 CS2
 Acetylene C2H2,
 Ethyl nitrate
IIC  Hydrogen
 Butadiene,
 Ethylene oxide,
 Propylene oxide
I 1 - 2 B
Carbon disulphide IIB
+
CS2
Acetylene IIB
+
C2H2
Ethyl nitrate IIB
+
C2H5
 ON02
 Acetylene I 1 - 2 C

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