摘要
研究了以冰醋酸和氢氧化钠为原料合成新型防腐剂双乙酸钠的反应条件,结论是:n(醋酸)∶n(氢氧化钠)=2.04-2.08,反应温度是100℃-120℃,蒸发温度是130℃-138℃,反应时间3h,双乙酸钠的产率为95.1%,产品质量达到FAO/WHO标准.馏出液可用作食用醋,达到了无废品排放的要求.
Preparation of new antiseptic sodium diacetate from sodium hydroxide and acetic acid is discussed in this paper. The reaction conditions are determined. The molar ratio of sodium hydroxide to acetic acid is 1 ：2.06- 1 ：2.08 ,reaction temperature is 100-120℃, and evapouring temperature is 130-138℃ ,and reaction time is 313. Sodium dicacetate is obtained in 96 % yield. Quality Of sodium diacetate is up to FAO/WHO standard.
出处
《开封大学学报》
2006年第1期94-96,共3页
Journal of Kaifeng University
关键词
双乙酸钠
防腐剂
sodium diacetate
antiseptic
