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In this addn. NH3 is removed before crystallisation by blowing an inert gas through the soln. The inert gas used is obtd. from the reaction vessel, and is washed with alkali and water to remove traces of NH3 and HCN before blowing through the soln.
BE6044300A1973-02-281973-09-05Stable alkali cyanides - prepd in continuous process with removal of ammo-nia before crystallisation
BE804511R
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