中文摘要：

采用振动弦黏度／密度计对二乙二醇二甲醚的密度和黏度进行了实验测量，测量的温度范围为243．15～323．15K，压力范围为0．1～20MPa。实验系统密度和黏度测量的不确定度分别为土0．2％和土2％。利用得到的实验数据，分别拟合了二乙二醇二甲醚密度和黏度的关联方程。密度实验数据与关联方程的平均绝对偏差为0．07％，最大绝对偏差为0．19％。黏度实验数据与关联方程的平均绝对偏差为0．83％，最大绝对偏差为2．20％。并对实验数据和文献数据进行了比较。为二乙二醇二甲醚的应用研究提供了基础物性数据。

英文摘要：

Measurements of the density and viscosity for diethylene glycol dimethyl ether are performed in the temperature range from 243.15 to 323.15 K at pressures up to 20 MPa using a vibrating-wire viscometer/densimeter. The overall uncertainties of these results are ＋0.2% for density and ±2% for viscosity. The measurements were correlated with Tait-like equation for density and hard-sphere scheme for viscosity. The average absolute deviation and maximum absolute deviation of the density measurements from the correlation are 0.07% and 0.19%, respectively. With regard to viscosity, the average absolute deviation and maximum absolute deviation of the present results from the correlations are 0.83% and 2.20%, respectively. Comparisons of the experimental data and literature data with the values calculated by the correlations at different temperatures and pressures are presented.