The alkaline filtrate of the clay is extracted from the alkaline filtrate of the clay after purification in the vacuum and after the addition of concentrated hydrochloric acid through Auslthern 2.5 g. sulphuric acid, the shrivelled solution of which is obtained by:<br>73rd layer. According to Kreuder, pure 1)-Anisol sulfuric acid melts at 97-98.<br>
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