Talk:Methanethiol

message: is this the same as the mercaptan that is added to gas for the smell? -- Tarquin 19:39 7 Jun 2003 (UTC)
:Yes, it is.  It also seems to appear naturally in some forms of natural gas. I'm a little concerned about this paragraph: Methanethiol is released from decaying organic matter in marshes and is present in the natural gas of certain regions in the United States, in coal tar, and in some crude oils.  It suggests that the product that is piped to your house has natural methanethiol.  It might home some, but the smell of natural gas product is usually because of methanethiol additives. --Mdwyer 19:29, 26 October 2006 (UTC)
replies: text: No, it is not.  Dimethyl sulfide is used as a minor component of some gas odorants, but the main components are either tert-butylthiol and/or tetrahydrothiophene in natural gas or ethanethiol in LPGs. JSR (talk) 19:09, 20 May 2012 (UTC)
thread_title: Untitled

message: Is there a biological or evolutionary reason why it smells so disgusting to humans? Do we have a special hard-wired centre to react to it? Are there animals who also find it disgusting, or some who find it smells nice? etc. I would love to see the article expanded in this direction.--Sonjaaa 19:15, 8 January 2007 (UTC)
thread_title: why it smells bad to humans?

message: Hello,
I understand that Methanethiol can be neutralised with weak hypochlorite solutions, but does anyone know a source for this? 129.78.208.4 03:45, 10 January 2007 (UTC)
replies: text: Yes, it can be neutralised in this way, but I only have personal experience to go on.  Walkerma 02:59, 28 August 2007 (UTC)
replies: text: Oxone is better - done it for real! Ronhjones (talk) 00:05, 25 February 2009 (UTC)
thread_title:  Chlorides 

message: As a result of a tragic explosion March 18, 1937 in New London, Texas when the high school exploded and 311 people were killed, (see link: www.nlse.org/tm0307.html ) the Texas Legislature established law requiring smell (Mercaptan) to be added to natural gas which is odorless to allow the smell to be detectable and the danger of a gas leak to be humanly detectable. The law also extablished the Texas Board for Professional Engineers to regulate and encourage professionalism and safety in engineering applications.  Interestingly energy companies like Gulf Oil immediately began adding Mercaptan to their natural gas distributions and even started adding Mercaptan to natural gas at source even in Venezuela where there were no laws requiring this but where the obvious safety aspects were also applied.Lrffrench 09:55, 27 August 2007 (UTC)
replies: text: This would be very nice history, and it can be linked to New London School explosion.  However, we need to know exactly which mercaptan was used for this purpose.  There has been some debate here whether methanethiol or the similar ethanethiol is used in gas, or whether both are used (as is tetrahydrothiophene_, depending on the country.  What we really need to know is reliable sources to tell us (a) whether or not this practice really began in Texas and (b) which mercaptan was introduced.  Do you have any more information on these aspects?  Thanks for a nice proposal, Walkerma 03:04, 28 August 2007 (UTC)
thread_title:  Mercaptan in Texas History 

message: I've done a little looking at these and the sources closer to the incident report a substance called Merkantan. Some sources are indicating LPG odorant.  This is ethanethiol, not methanethiol.  The Milan and SF Bay incidents are both natural gas odorants and not methanethiol.  I am suggesting that the Incidents section be removed from this topic.  JSR (talk) 19:09, 20 May 2012 (UTC)
thread_title: Incidents

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thread_title:  External links modified