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GAS DETECTION - PHYSICAL DATA |
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Gas substance |
Chemical formula |
Density
air = 1 |
TLV in USA
TWA |
Explosion limit, LEL 20°
C/
1013 mbar |
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Ammonia |
NH3 |
0.59 |
25 ppm |
15 |
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Argon |
Ar |
1.38 |
- |
- |
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n-Butane |
C4H10 |
2.09 |
- |
2 |
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Ethanol |
C2H5OH |
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1000 ppm |
3.3 |
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Helium |
He |
0.14 |
- |
- |
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Chlorine |
Cl2 |
2.49 |
0.5 ppm |
- |
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Carbon dioxide |
CO2 |
1.53 |
5000 ppm |
- |
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Carbon monoxide |
CO |
0.97 |
35 ppm |
12.5 |
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Nitrogen |
N2 |
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- |
- |
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Nitrogen Monoxide |
NO |
1,04 |
25 ppm |
- |
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Nitrogen dioxide |
NO2 |
2.75 |
2 ppm |
- |
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Methane |
CH4 |
0.55 |
- |
5.0 |
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Propan |
C3H8 |
1.56 |
- |
2.2 |
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Sulphur dioxide |
SO2 |
2.26 |
2 ppm |
- |
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Hydrogen Sulphide |
H2S |
1.19 |
10 ppm |
4.0 |
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Oxygen |
O2 |
1.0 |
- |
- |
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References |
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