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  1. #11

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    He's not known as "The Wizard of Rochester" without good reason.

  2. #12

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    Pity you were not closer, I have 20kg bags of Sodium Carbonate (anhydrous) here.

  3. #13

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    Good luck man!

  4. #14

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    from NIH:

    http://householdproducts.nlm.nih.gov...nds&id=3005022

    link above says Arm & Hammer sodium carbonate is 85% sodium carbonate, 15% water....which according to a post from Gainer in this thread http://www.apug.org/forums/forum37/1...soda-info.html means it is monohydrate

  5. #15
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    Coffee maker cleaner is often made from sodium carbonate. Usually pure.
    You can buy it at WalMart or the grocery store. Just read the label first.
    Randy S.

    In girum imus nocte et consumimur igni.

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    http://www.flickr.com/photos/randystankey/

  6. #16

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    If anyone is interested, there's a least a couple threads on APUG (and maybe one on photo.net) where the difference between photographic grade sodium carbonate and soda ash sodium carbonate are thrashed about...

    Edit - I see the thread linked above contains links to the threads I mentioned in it.
    Kirk

    For up from the ashes, up from the ashes, grow the roses of success!

  7. #17
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    Just read the link at NIH.GOV. Looked up sodium carbonate.

    HtH Ph Plus, the chemical for swimming pools, is 99.8 to 100 percent sodium carbonate.
    It's available at WalMart in the home and garden section where you buy swimming pool chemicals.

    http://www.walmart.com/ip/HTH-pH-Plus/17043635
    Randy S.

    In girum imus nocte et consumimur igni.

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    http://www.flickr.com/photos/randystankey/

  8. #18

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    I got my sodium carbonate at Walmart as arm&hammer washing soda...my local grocery stores don't seem to sell it anymore...wonder which is cheaper...the washing soda or the pH plus

  9. #19
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    Per the link above, WalMart price = $8.47 for 5 lb.
    Randy S.

    In girum imus nocte et consumimur igni.

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    http://www.flickr.com/photos/randystankey/

  10. #20

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    Quote Originally Posted by Gerald C Koch View Post
    You can convert baking soda (sodium bicarbonate) into very pure sodium carbonate by heating it in the oven. Baking soda is USP grade and so contains fewer impurities than washing soda. Place the baking soda in a glass or SS pan and heat it at 350 F for about an hour. Stir it a couple of times during the process. The fine crystals of baking soda will change to a fine fluffy powder of anhyrous sodium carbonate.
    so if this is more pure than the "washing soda" I've been using & bicarbonate is much more available....and heating for an hour in the oven is so easy...seems like a good alternative

    will the anhydrous absorb water from the air and turn into the monohydrate?

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