| 摘要 |
<p>Process for the preparation of anhydrous alcoholic solutions of sodium polysulphides, comprising the stages of: a) preparing an anhydrous alcoholic solution of sodium sulphide by adding a predetermined amount of an anhydrous crude sodium sulphide with a known titer of Na2S, (preferably sodium sulphide "black ash" obtained from the reduction of sodium sulphate with carbon), to a preestablished volume of an anhydrous alcoholic solvent; b) adding a stoichiometric amount of sulphur to the said anhydrous alcoholic solution, c) reacting the said anhydrous crude sodium sulphide with the sulphur, thus obtaining an anhydrous alcoholic solution of sodium polysulphides.</p> |
