苯酐-吡啶法测定聚醚多元醇中羟值含量

Phthalic anhydride-pyridine method for the determination of hydroxyl value polyether polyol content

本文介绍了利用苯酐-吡啶法测定聚醚多元醇中的羟值含量。讨论了水含量、称样量、NaOH的滴加速度等对测定结果的影响。此法的酯化反应稳定、彻底,是一种测定数据准确、可靠的测定方法。

This paper describes the use of phthalic anhydride - pyridine determination of polyether polyol hydroxyl value content. The water content, sample weight, sodium hydroxide drop acceleration effects on the test results were discussed. The esterification reaction is stable, completely, is a kind of determination data accurate, reliable method for the determination.