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  1. #1
    Join Date
    Sep 2014
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    Hot Springs Arkansas
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    Default Oxalic Acid Types

    There are apparently at least two types of oxalic acid forms. One being the type bee keeper use being labeled wood bleach, the other is a crystal type that is 99.6 pure looks like sugar. We use that type as a stain remover in swimming pools. Does anyone know if they are the same as I haven't seen what the wood bleach type looks like. I would like to use what I presently have if possible.

  2. #2
    Join Date
    Nov 2009
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    Default Re: Oxalic Acid Types

    They are one in the same as long as what you're using in the pool has no other "additives." I guess not since you say it is 99.6% pure.
    http://OxaVap.com Your source for the Varrox Mite Killing
    OA Vaporizer "One of the highest ranked" by R. Oliver

  3. #3
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    Jan 2009
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    Default Re: Oxalic Acid Types

    Quote Originally Posted by Huggs View Post
    There are apparently at least two types of oxalic acid forms.
    Look at the MSDS for the product that you use in pools & compare it to that of Wood Bleach. The Savogran MSDS indicates 95 to 100% Oxaliyc acid by weight. The consistency is that of of powdered sugar.

    I'm not clear why you believe there is more than one type of oxaluc acid.

    Wayne

  4. #4
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    Nov 2009
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    Default Re: Oxalic Acid Types

    Quote Originally Posted by waynesgarden View Post
    . The consistency is that of of powdered sugar.
    Wayne
    I find more to be more like salt or sugar....not so "powdery."
    http://OxaVap.com Your source for the Varrox Mite Killing
    OA Vaporizer "One of the highest ranked" by R. Oliver

  5. #5
    Join Date
    May 2012
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    Knox, Pa. USA
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    Default Re: Oxalic Acid Types

    If it is 99.6% pure what others harmful additives could it have? Maybe .4% cyanide would do something but I doubt that is the case.

  6. #6
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    Nov 2009
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    Default Re: Oxalic Acid Types

    Quote Originally Posted by Tenbears View Post
    If it is 99.6% pure what others harmful additives could it have?
    Most likely some "inert" substance. I'd use it.......
    http://OxaVap.com Your source for the Varrox Mite Killing
    OA Vaporizer "One of the highest ranked" by R. Oliver

  7. #7
    Join Date
    Apr 2009
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    Stilwell, KS
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    Default Re: Oxalic Acid Types

    Quote Originally Posted by snl View Post
    I find more to be more like salt or sugar....not so "powdery."
    OA is hygroscopic so it readily absorbes moisture form the atmosphere. It may start out powdery but will soon start to clump.
    Honey Badger Don't Care ಠ_ಠ ~=[,,_,,]:3

  8. #8
    Join Date
    Apr 2009
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    Default Re: Oxalic Acid Types

    Quote Originally Posted by Tenbears View Post
    If it is 99.6% pure what others harmful additives could it have? Maybe .4% cyanide would do something but I doubt that is the case.
    They don't put in additives, it is just a matter of how pure the manufacturing process is. If you want better purity, you can buy technical grade OA (99.999% pure) for $3 a gram feom Sigma Aldrich.

    http://www.sigmaaldrich.com/catalog/...g=en&region=US
    Honey Badger Don't Care ಠ_ಠ ~=[,,_,,]:3

  9. #9
    Join Date
    Jul 2011
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    Evansville, IN
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    Default Re: Oxalic Acid Types

    Oxalic acid is oxalic acid, but it can be found in two "formulas" -- pure anhydrous and the dihydrate. The difference is that the anhydrous powder is free of water (at least until you let it sit around for a while) and the dihydrate is crystals of oxalic acid with two water molecules for every molecule of oxalic acid. The latter will be like sugar, I think, and will not abosrb water as much as the anhydrous, but when mixing it by weight you have to take the water content into account.

    Both are "pure" -- water is not considered and adulterant when it's water of hydration in crystal form.

    There might also be a decahydrate crystal form as well, but I'm not sure.

    Peter

  10. #10
    Join Date
    Feb 2011
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    Belpre,Ohio, USA
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    Default Re: Oxalic Acid Types

    I use oxalic dihydrate at 99.6% purity which is in crystal form and is very effective for killing mites.

    I like Peters explanations of the different forms of oxalic, very enlightening.
    Bill...in Southeast Ohio Zone 6A

  11. #11
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    Nov 2009
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    Default Re: Oxalic Acid Types

    Quote Originally Posted by Nabber86 View Post
    If you want better purity, you can buy technical grade OA (99.999% pure) for $3 a gram feom Sigma Aldrich.

    http://www.sigmaaldrich.com/catalog/...g=en&region=US
    No need to spend that. Better than 95% is just fine.
    http://OxaVap.com Your source for the Varrox Mite Killing
    OA Vaporizer "One of the highest ranked" by R. Oliver

  12. #12
    Join Date
    Oct 2010
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    Pueblo, Colorado, USA
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    Default Re: Oxalic Acid Types

    Mine says 100% OA on the label
    Zone 5a @ 4700 ft. High Desert
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