Thread: gas smell from a plastic vent connected to the gas meter
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Wayne Whitney
 
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Default gas smell from a plastic vent connected to the gas meter
On 2005-12-02, wrote:

Just curious, what is mercapan? Yes, I know it's the odorant in the
gas, but what I am asking, WHAT IS THIS SUBSTANCE?

It's methyl mercaptan, CH3SH, i.e. it is like methanol (CH3OH) with
the oxygen atom replaced by a sulphur atom. For more information, try
http://en.wikipedia.org/wiki/Methyl_mercaptan.

Cheers, Wayne
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