METHOD FOR PREPARING SODIUM COMPOUND HAVING REDUCED POTASSIUM CONCENTRATION AND THE SODIUM COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a method for preparing a sodium compound, whereby the sodium compound having a reduced potassium concentration can be readily obtained.;SOLUTION: The method for preparing the sodium compound having a reduced potassium concentration comprises: a preparation step of preparing an aqueous solution of a sodium compound containing potassium ion; a precipitation step of adding sodium tetraphenylborate to the aqueous solution of the sodium compound so as to precipitate potassium tetraphenylborate; and a separation step of separating the precipitated potassium tetraphenylborate. The sodium compound obtained by the method for preparing the sodium compound is also provided.;COPYRIGHT: (C)2012,JPO&INPIT