The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.
通过对其酰化原理
,
用乙酰氯作酰化剂、二氯甲烷作酰化溶剂,测定含环氧基聚酯
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.
通过对其酰化原理
,
用乙酰氯作酰化剂、二氯甲烷作酰化溶剂,测定含环氧基聚酯
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
食用香料硫代乙酸甲酯

进行了初步研究,产率达到693%,对所

产品做了红外光谱
和质子核磁共振
,确定了其化学结构。
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