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The results indicate a mixture of triacetyl derivative with a lower derivative.( b ) Derivative with Hydrated Sodium Acetate-The procedure followed in this case was identical with that described above except t h a t 4 g. of crystalline sodium acetate and I O g. of galactan t o 50 g. of acetic anhydride were employed. A yield of 3 . 5 g. of the purified acetyl derivative was obtained.Approximately 0.3 g. of the derivative was hydrolyzed by boiling with I O O cc. of N / 4 under a reflux condenser for about 4 hrs., complete solution being obtained. The solution was then titrated with standard alkali in t h e usual manner. 0.2625 g. acetyl derivative gave 0.1297 g. acetic acid 0.3530 g. acetyl derivative gave 0.1722 g. acetic acid Per cent Acetic Acid Found Calculated for Duplicates Mean CsH8Ob(OC.CHs)z 49.40 49.78 49.09 48.78