1542 RICHARD T. ARNOLD AND EUGENE C. COYNER ... 35 ml. of 10% sodium hydroxide with vigorous stirring. The temperature of the mixture was then maintained at 50' and the mixture stirred until the dimethyl sulfate layer had disappeared. Then 10 ml. more of sodium hydroxide and 3.8 ml. of dimethyl sulfate were added and the mixture stirred until solution was complete. This step was re- peated three more times. The solution was cooled and then ...
