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  1. #1
    Murray@uptowngallery's Avatar
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    favorite glycol source?

    I have not been able to relax with the concept of mystery additives in automotive propylene glycol antifreeze, so I keep wrestling with this.

    It occurred to me that RV/mobile home PG antifreeze might be 'cleaner'.

    1) Am I worrying unneccessarily about what kind of antifreeze to choose?

    2) Has anyone else found success with the RV variety?

    Thanks

    Murray
    Murray

  2. #2
    Mike Wilde's Avatar
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    JD sourced mine

    JD Photochem came up with the prop glycol that I use for dev stock solution use. I have no idea where Claire sources it from, but it is working fine for me.

  3. #3

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    I've been wondering about a source as well. RV antifreeze is cheap, but certainly has additives (dye, if nothing else). Mail order sources are out there, but shipping gets expensive.

    One possible source may be farm stores. Apparently propylene glycol is used to treat dairy cows for ketosis (whatever that is). I looked once in a store outside of Minneapolis that stocks dairy farm "stuff", but could not find it. Next time I'm there I'll ask.

  4. #4
    eclarke's Avatar
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    Look in the Business yellow pages. Any company who sells industrial solvents has all the glycols...Evan Clarke

  5. #5

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    In Canada: JD Photochem

    In the USA: The Chemistry Store

    Google them for their URLs
    Tom Hoskinson
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    Everything is analog - even digital :D

  6. #6
    Jim Noel's Avatar
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    I use anti-freeze meant for RV potable water systems with no problem. It has a little color, but this does not appear to have any effect.

    Googling produces the info that it is used for horses, especially in colder climates. It is put in water to keep it from freezing and,as i remember, used to rub them don in certain cases. I have not bought any at such places but have been told that they carry it in gallons and that it is cheaper than at RV suppliers.
    [FONT=Comic Sans MS]Films NOT Dead - Just getting fixed![/FONT]

  7. #7
    Murray@uptowngallery's Avatar
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    I'll guess (tongue in cheek) - ungulates with ketosis probably get is from drinking diet soft drinks.

    Something caused by ketone-derivatives? Seriously, diet soda sometimes is labeled :"Phenylketonurics warning - contains phenylalanine"

    Maybe it's a similar condition.

    Murray
    Last edited by Murray@uptowngallery; 10-11-2007 at 11:14 PM. Click to view previous post history.
    Murray

  8. #8
    Murray@uptowngallery's Avatar
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    Killed that thread...no use beating a dead horse har har har
    Murray

  9. #9

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    Solar panel installers

    I picked some up from a local solar panel installer, real cheap if I remember. it was clear in color. I haven't used it for chemicals, but I use it for my pottery business. Just a thought
    regards
    Erik

  10. #10
    Murray@uptowngallery's Avatar
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    OK.

    I just looked at an MSDS sheet
    http://www.setonresourcecenter.com/m...7/wcd04724.htm
    for some brand of pink RV antifreeze, and it's disappointing (understandably).

    25.5% propylene glycol
    76.5% water
    <1 % pink dye

    That adds up to 102-103% (maybe they are maxima), but the large water component shows it doesn't serve the purpose of use for a waterless base.

    Others have pointed out some contain sodium silicate.

    Another
    http://www2.itap.purdue.edu/msds/docs/7753.pdf

    PG >35%
    H2O >60%
    proprietary additives <5%

    That's enough info for me.
    Murray

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