The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.
通过对其
原理分析,选用

作
剂、二
甲烷作
溶剂,测定含环氧基聚酯的羟值。
The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.
通过对其
原理分析,选用

作
剂、二
甲烷作
溶剂,测定含环氧基聚酯的羟值。
Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.
对可用于
种调味香精的食用香料硫代
酸甲酯的合成进行了初步研究,产率达到693%,对所合成的产品做了红外光谱分析和质子核磁共振分析,确定了其

构。
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