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Topic: Making Borax  (Read 3457 times)

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Offline ifuller

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Making Borax
« on: March 29, 2008, 01:31:23 PM »
I am looking for a way to make borax Na2B4O7. I know that it is an ore that is made by the repeated drying of seasonal lakes but I am looking for a way to create it in the laboratory. I have read that it can be synthetically produced using other boron compounds but I am looking for a specific or a couple specific ways. Does anyone know the reactants necessary or have any idea where I could find them? Thanks
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Offline ifuller

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Re: Making Borax
« Reply #1 on: March 31, 2008, 10:04:53 PM »
How does it form in nature? I have read the vague definition, "repeated drying of lakes" but that doesn't give me any insight.
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Offline Borek

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Re: Making Borax
« Reply #2 on: April 01, 2008, 03:45:09 AM »
Thermal dehydration of sodium borate (in the presence of excess boric acid) comes to mind.
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Offline fareeha

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Re: Making Borax
« Reply #3 on: May 16, 2008, 03:08:46 PM »
yup there are two ways which are as under

4H3BO3+Na2CO3 gives us Na2B4O7 +6H2O+CO2

and

Ca2B6O11+2Na2CO3 gives Na2B4O7 + 2CaCo3+2NaBO2
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