Is the Butane in gas bottles 100% butane?

Discussion in 'Tech/Mech General' started by Douglas, Mar 31, 2009.

  1. Douglas

    Douglas Read Only Funster

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    Does anyone know if the butane in gas bottles is 100% butane or is it a mixture of propane and butane.

    I recently bought a local bottle as a backup to the bulk storage and and the fridge flame in not correct on this gas and I believe that it is 100% butane were as the butane in the UK is a mixture.

    Doug
     
  2. scotjimland

    scotjimland Funster Life Member

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    Hi Doug

    As I understand it, Butane is 100% butane, likewise Propane is 100% propane.
    I presume you filled the bulk storage tank with LPG ? .. which is a mix of butane and propane.. depending on country and season the ratio is different and changes.. ie it has more propane in winter.

    You may be able to adjust the air / gas mix to get a better, cleaner flame.. when I run on bottled propane rather than LPG I get a sootier flame ..

    hth

    Jim
     
  3. Douglas

    Douglas Read Only Funster

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    Ok, more detail.

    In the UK,Portugal and Spain the butane gives no problem but in Tenerife the butane is making so much soot that I have to clean the fridge chimney every 10 days, and as there is no autogas in Tenerife it has become a problem.

    Doug
     
    Last edited: Mar 31, 2009
  4. madbluemad

    madbluemad

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    Hi Doug

    The atomic structure of Butane is diferent from that of Propane and so they are both two totally different gases.
    It may be that in the manufacture of the batch of gas that you are using enough care hasn't been taken and there are trace elements that should have been filtered therefore giving you a problem.
    Dont suppose this hepls you much but its a try.

    Jim, dont know what you mean by LPG, LPG is just an anacronym for Low Pressure Gas and could be either propane or butane but its unlikley to be both. Autogas is propane.
    I'm sure you will put me right
    Cheers

    Jim:Smile:
     
  5. Caztur

    Caztur Funster

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    Campingaz is butane in bottles but a mixture of propane and butane in the smaller canisters used for stoves and lights etc.
     
  6. scotjimland

    scotjimland Funster Life Member

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    :Laughing::Laughing:

    Hi Jim

    LPG = Liquid Petroleum Gas = Auto Gas, I think that's a trade name but it's the same stuff

    It is a mix of butane and propane , IIRC about 80 % butane 20% propane, but the ratio varies from country to country and by season..

    Another interesting fact, both are odourless, the 'stench' ( yes it's called stench) is added at the refinery.

    One of the problems with LPG, if it's used in sub zero temperatures, the butane content stops boiling off and it remains in the tank until the next fill, subsequent re fillings will get smaller as more butane collects in the bottom of the tank.. it will collect and stay there until the ambient is warm enough to allow it to boil off...
     
  7. MicknPat

    MicknPat Funster

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    Jim,

    I'm sure that someone over here (USA) told me that American RVs cookers, hobs, fridges and funaces should ONLY be run on porpane and NOT butane, is this true?

    Mick
     
  8. madbluemad

    madbluemad

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    Woops, LPG= Liquid Petroleum Gas.

    We have a Calor Gas place down the road from us and I went down there to ask them a few questions, one being what is Autogas.

    They absolutley assured me that Autogas is Propane and that the gas in the Autogas pump is exactley the same as the gas thats in the Propane cylinders.

    I'm rapidly starting to lose the point that I was trying to make now but in the interests of my education I'll crack on.

    If Liquid Peroleum Gas is a mixture of propane and butane and Autogas is Propane how can this be calassified as LPG. Even though it is?.

    Maybe I should bail out of this one Jim. Give myself a chance to figure out what I'm ramblin on about. :Rofl1::Rofl1::Rofl1:

    Cheers

    Jim :thumb:
     
  9. madbluemad

    madbluemad

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    Hi Mick
    Thats my understanding of it. My owners manual tells me that under no circumstances should butane be used. Thats what drew me to this post.

    Cheers

    Jim :thumb:
     
  10. scotjimland

    scotjimland Funster Life Member

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    Hi Mick

    I can only go on my experience, 'needs must is a great master' ..

    rightly or wrongly I've ran on

    Butane, (several months in Spain and Morocco),
    Propane. (several months in the UK) and
    LPG (touring France) ..

    so I don't know if it's true or not .. maybe Dunc or Lynda will enlighten us :Smile:

    but you have no need to run on pure Butane.. LPG or Propane is available in most places.
     
    Last edited: Mar 31, 2009
  11. scotjimland

    scotjimland Funster Life Member

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    When in doubt.. get the Wiki out :Laughing:

    Liquefied petroleum gas - Wikipedia, the free encyclopedia

    small extract

    Varieties of LPG bought and sold include mixes that are primarily propane, mixes that are primarily butane, and the more common, mixes including both propane (60%) and butane (40%), depending on the season—in winter more propane,
     
  12. Douglas

    Douglas Read Only Funster

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    And I always thought it stood for Liquid Petroleum Gas

    Doug
     
  13. Douglas

    Douglas Read Only Funster

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    I will start the thead again

    I will Start the thread again as no one actualy addressed what I wanted to know!!!
    ______________________________________________________________________



    So, Does any one know if the butane gas as sold in bottles in the UK is 100% butane or is it a mixture of propane and butane, please try and stick to the thread as it is important to me, if you don't know please do not post, thank you.

    Doug..
     
  14. madbluemad

    madbluemad

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    Its Butane and its a pleasure
     
  15. scotjimland

    scotjimland Funster Life Member

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    With all due respect, I answered in the first post..

    but will respect your wishes ..
     
  16. olley

    olley Funster

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    According to what I have read the two gases mix freely together, and the overall boiling point decreases with the increase in the Butane content.

    Olley
     
  17. madbluemad

    madbluemad

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    :Rofl1::Rofl1::Rofl1: :thumb:
     
  18. scotjimland

    scotjimland Funster Life Member

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    :whistle:
     
  19. Douglas

    Douglas Read Only Funster

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    From the site below I found that Butane is infact a mixture of gasses and I am now quite satisfied that my particular problems with my fridge are due to the gas in Tenerife being of a different mixture that that of Europe.



    http://www.aegpl.com/content/Default.asp?PageID=10

    Commercial butane contains mainly N-butane, isobutene and butene as well as some propane, pentane and odorant. This product typically exhibits the following average physical properties:

    * boiling point: between -8° C to 0° C at 1.0133 bar
    * flammability: between 1.8 and 9.0 % of butane with air

    When stored (either in tanks or in cylinders), butane exists in both a gaseous and a liquid state, with the pressure of the gas being a function of its temperature (see table 3). For example, at O° C, the pressure is 0.4 bar; at 15° C, it is 1.2 bar. When gas is extracted, the balance is disrupted and the liquid begins to bubble. The heated needed for this vaporization is provided by the combination of the liquid and the reservoir, which reduces the temperature and causes a thermal exchange with the ambient air until the balance is re-established.
     
  20. pappajohn

    pappajohn Funster Life Member

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    so did i Doug.

    try unscrewing the neck of a gas bottle and see how LOW pressure that is.

    should actually be 'Liquified Petroleum Gas', at least thats what its called on the bulk tank at the local BATA depot.
     
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