Solubility of sodium tetraphenylborate in solutions of NaCl, Na2NO3, Na2SO4, NaCl+MgCl2 at 25°
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The solubility of sodium tetraphenyiborate (TPB) in solutions of NaCl, NaNO3, Na2SO4 and NaCl+MgCl2 was studied at 25°C.
The solubility of sodium TPB drops to zero with increasing concentration of the salting out agent in solution, and 1 g-eq of sodium TPB is isolated per 1.5 g-eq of the added Na salt.
The optimum initial concentration of sodium TPB, recommended for the isolation of the salt from aqueous solution and for its purification, is equal to 8%.
KeywordsSodium Aqueous Solution Purification MgCl2 NaNO3
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