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Into a 300 ml. flask equipped as in EXAMPLE I and maintained under a nitrogen atmosphere were added 21.5 grams magnesium acetate tetrahydrate and 80 ml. acetic anhydride and the mixture was heated at the reflux temperature for 1 hour. After cooling, a clear liquid was drawn off and the remaining solid was dried at 35° C. under a vacuum of 0.3 mm mercury for several hours to obtain anhydrous magnesium acetate.

1. customflask equipped as in EXAMPLE I
2. temperaturemaintained under a nitrogen atmosphere
3. temperatureAfter cooling
4. dry with materialthe remaining solid was dried at 35° C. under a vacuum of 0.3 mm mercury for several hours