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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Xubu on July 18, 2008, 06:08:07 AM

Title: Preparation of potassium tetraborate (K2B4O7.4H2O)
Post by: Xubu 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

Title: Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
Post by: IITian 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  ;)

Title: Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
Post by: n4k on September 17, 2008, 03:05:33 PM

4H3BO3+K2CO3=K2B4O7+6H2O+CO2

Title: Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
Post by: IITian on December 04, 2008, 06:56:57 PM

i dried an aqueous mixture of boric acid and potassium carbonate to get K-tetraborate

Title: Re: Preparation of potassium tetraborate (K2B4O7.4H2O)
Post by: m093 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