hydroxyl value
羟值：在分析化学中
常用释义
英式发音
美式发音
基本释义
- 羟值：在分析化学中，羟值被定义为毫克氢氧化钾（KOH）中和醋酸乙酰化一克含有自由羟基的化学物质所需的数量。
例句
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1·The viscosity and hydroxyl value of PHPB synthesized under these conditions attained better level.在此条件下合成出来的PHPB的羟值和粘度均达到较好的水平。
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2·A method for determining hydroxyl value of epoxy-containing polyester, namely acetyl chloride method is introduced.介绍了一种含环氧基聚酯的羟值测定方法，即乙酰氯法。
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3·Acid value and hydroxyl value are two pieces of characteristic value of the purpose products and the experiment adopts the titrimetric law of acid and alkali to confirm them.酸值和羟值是目的产品的两个特征值，实验采用酸碱滴定法来确定两个特值。
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4·The changes of molecular weight, life under heat, acid value, hydroxyl value and chlorine content of lac resin during bleaching and de-chlorinating processes have been studied.本文研究了紫胶树脂在漂白和脱氯过程中分子量、热寿命、酸价、碘价、羟基值和氯含量的变化情况。