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Thread: Borates, heard of Solubor?

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    Borates, heard of Solubor?

    Has anyone herad of SOLUBOR? I found it here at an fertilizer outlet. 50lbs for $65.00 here is the MSDS.

    http://www.pestell.com/msds/Solubor.pdf

    Would this composition work in a pool? Any ideas?

    Thanks!
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    Re: Borates, heard of Solubor?

    I wrote about this in the Borax Source thread. You can skip to the last post for the bottom line which is that you can use it as a source somewhat similar to 20 Mule Team Borax except that you use somewhat more by weight (10-20%) if you are using it to raise the pH while if you are using it to add borates, you add about half as much by weight and roughly half as much acid.

    The following table shows the amount of borate product and full-strength Muriatic Acid (31.45% Hydrochloric Acid) needed to raise borates by 10 ppm in a 10,000 gallon pool and start and end with a pH of 7.5:

    ............................................................ ............................... Product Weight .................. Acid Volume
    20 Mule Team Borax (sodium tetraborate decahydrate) ...... 117.75 oz. (1.64 boxes) ...... 56.4 fl. oz.
    ProTeam Supreme (sodium tetraborate pentahydrate) ........ 90.0 oz. (5.6 pounds) ........... 56.4 fl. oz.
    Boric Acid ............................................................ ............... 76.4 oz. (4.8 pounds) ........... none (pH drops slightly)
    Solubor (disodium octaborate tetrahydrate; DOT) ................ 63.7 oz. (4.0 pounds) .......... 26.9 fl. oz.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
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    Re: Borates, heard of Solubor?

    Awesome! I was reading MSDS and thought it would be ok, but to be sure I thought I'd check here!
    Can't believe I missed that thread!

    So it's twice as potent as 20 mule team Borax and not as much of an acid demand. Good deal!

    Thank You very much!

    Can't buy any til spring, but I'll be ok til then anyways!
    14X28 inground Vinyl
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    Re: Borates, heard of Solubor?

    Chem Geek, I read Your great post on Borates. I noticed there were concerns about the Borax turning into undissociated Boric Acid. In the MSDS of this source of Solubor it contains this.


    Environmental Fate Data
    Persistence/Degradation: Boron is naturally occurring and ubiquitous in the environment. Solubor
    decomposes in the environment to natural borate.
    Octanol/Water Partition Coefficient: No value. In aqueous solution disodium octaborate tetrahydrate
    is converted substantially into undissociated boric acid.
    Soil Mobility: Solubor is soluble in water and is leachable through normal soil

    Maybe this will clarify the matter?

    http://www.pestell.com/msds/Solubor.pdf
    14X28 inground Vinyl
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    Re: Borates, heard of Solubor?

    Borates in pool water at typical pool pH are mostly undissociated boric acid so that is normal. At a pH of 7.5, 97.8% of the borates are undissociated boric acid while 2.3% are borate ion. That thread was concerned about forming octoborate ion instead of boric acid, but the MSDS implied that it indeed formed mostly boric acid which is what we want.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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