Flash-Point Prediction of Miscible Mixtures by UNIFAC Approach
Flash point is the most important variable used to characterize fire and explosion hazard of liquids. The models, which can predict the mixtures flash point well, are almost based on an activity coefficient equation to estimate the non-ideality of liquid mixtures. However, the binary interaction parameters necessary for these equations are not always accessible. This paper combined the flash point prediction model proposed previously with the UNIFAC-type models, which do not need the experimental binary parameters, to predict the flash point of miscible mixtures. The validation of this combination is done by comparing the predicted values with the experimental data for binary and ternary mixtures, including mixtures of flammable solvents and aqueous-organic mixtures. Results reveal that the model describes the experimental data well when using the UNIFAC-type models to estimate the liquid phase activity coefficient. Overall, UNIFAC-Dortmund is the most recommended equation for applying to the model to estimate the flash point of miscible mixtures, due to its good predictive capability and more completed database of binary interaction parameters. Potential application for this approach concerns the classification of flammable liquid mixtures in the implementation of GHS.
flash point UNTFAC miscible mixtures prediction
LIAW Horngjang LI Yihua
Department of Occupational Safety and Health, China Medical University, Taichung, Taiwan, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
944-950
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）