化学学报 ›› 1991, Vol. 49 ›› Issue (4): 351-358. 上一篇    下一篇

研究论文

一种新型密度计及水、丙酮、4-甲基-2-戊酮(MIBK)三元混合物 的密度测定

徐英年;周洁   

  1. 华东化工学院化学系热力学研究室
  • 发布日期:1991-04-15

A new density meter and the density measurement of water-acetone-4- methyl-2-pentanone (MIBK) ternary mixture

Xu Yingnian;Zhou Jie   

  • Published:1991-04-15

我们设计了一种小型密度计,它用螺旋测微计作体积置换泵,可测到3×10^-^4mL的体积变化。实验时仅需8mL样品便可精确测定各温度下的密度,其精度≤2×10^-^4g/mL,而且操作简单,用该装置测定了293.15-323.15K水、丙酮、MIBK及相应的二元、三元体系的液体密度,并进行了关联。

关键词: 水, 丙酮, 密度测定, 三元混合物, 戊酮, 密度

A new density meter was designed and the screw micrometer was used as a volume exchange pump to measure the change of liquid volume. It can measure the volume of 3× 10^-^4ml, and needs only 8mL sample to accurately measure the densities at different temperatures. The meter is very simple, however, it gives a high accuracy, 2×10^-^4g/mL. With this meter, the liquid densities of water, acetone, MIBK and the corresponding binary and ternary mixtures were measured over 293.15- 323.15K.

Key words: WATER, ACETONE, DENSITY MEASUREMENT, TERNARY MIXTURE, PENTANONE, DENSITY

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