Is there any relationship between the tendency of a gas to leak from containers/pipework and its molar weight?
For instance, given smaller molar mass of hydrogen (2.016 g/mol) compared to 16 g/mol for Natural Gas, is it correct to conclude that Hydrogen would exhibit a greater leakage risk when replacing natural gas in utility pipelines when transmitted under the same working pressures?
Yes of course, when the molecular mass of gas decreases its leakage rate increases. Hydrogen gas for example can easily leak many types of package materials such as plastics and glass; and only aluminum package can be used for preventing its leakage.
Absolutely wonderful gentlemen,
If anyone please can guide me to a referenceable source that confirms this relationship (i.e. smaller gas molar size = more leakage risk) i would be most grateful...
Hi Mohammad Royapoor
Please find enclosed to this message a paper that explains different parameters affecting the transmission of gases.
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