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Topic: Preparation of potassium tetraborate (K2B4O7.4H2O)  (Read 10973 times)

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Offline Xubu

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Preparation of potassium tetraborate (K2B4O7.4H2O)
« on: July 18, 2008, 06:08:07 AM »
Hi,
I'd like to prepare potassium tetraborate from boric acid and potassium hydroxide. I had read an article of Ressig, Strominger, Leloir about it (in Biol. Chem. 1955) but i found the direction isn't clear. Can you help me???
Thank  ;D
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Offline IITian

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Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
« Reply #1 on: August 27, 2008, 03:29:40 PM »
check United States Patent 2455595  for details

Alternatively, you can try to react boric acid with a weak base containing potassium  ;)
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Offline n4k

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Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
« Reply #2 on: September 17, 2008, 03:05:33 PM »
4H3BO3+K2CO3=K2B4O7+6H2O+CO2
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Offline IITian

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Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
« Reply #3 on: December 04, 2008, 06:56:57 PM »
i dried an aqueous mixture of boric acid and potassium carbonate to get K-tetraborate
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Offline m093

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Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
« Reply #4 on: June 09, 2012, 11:04:19 AM »
4H3BO3+K2CO3=K2B4O7+6H2O+CO2
for this equation what should be proportion of boric acid & potessium carbonate to make k. tetraborate.
and what process to be done?
thanks
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