New experimental data on the viscosity, η(T), heat capacity C_P(T), speed of sound c(T), and density ρ(T) of 1-butyl-3-methylimidazolium tris(pentafluoroethyl) trifluorophosphate [BMIM][FAP] are reported that allow the development of wide range reference correlation. The measurements have been made at atmospheric pressure over a temperature range from (263 to 414) K for the viscosity (η), from 273 to 413 K for the heat capacity (C_P), from 273 to 413 K for the density (ρ), and from 283 to 343 K for the speed of sound (c) using various types of commercial instruments. The combined expanded uncertainty of the viscosity, heat capacity, speed of sound, density, and temperature measurements at the 0.95 confidence level with a coverage factor of k = 2 is estimated to be 0.35% and 1.0% (for two different instruments), 1.5%, ± 0.5 m·s^–1, (0.05 to 0.3) kg·m^–3, and 0.05 K, respectively. These new experimental data were used to develop a wide range correlation for the viscosity based on theoretically confirmed Vogel–Tamman–Fulcher (VTF) model. The value of the glass temperature (T_g) for the IL was estimated using the VTF parameters derived from the present viscosity measurements. Measured values of density, heat capacity, and speed of sound were used to calculate other very important thermodynamic properties, k_S, k_T,a_P, γ_V, ΔH, C_V, , and .

中文翻译：

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1-丁基-3-甲基咪唑三（五氟乙基）三氟磷酸酯的粘度，密度，热容量，声速和其他派生性质在宽温度范围和大气压下

关于1-丁基-3-甲基咪唑三（五氟乙基）三氟磷酸酯[BMIM]的粘度，η（T），热容C _P（T），声速c（T）和密度ρ（T）的新实验数据[FAP]被报道允许发展广泛的参考相关性。测量是在大气压力下进行的，温度范围从（263至414）K，粘度（η），从273至413 K，热容（C _P），从273至413 K，密度（ρ） ），以及从283到343 K的声速（c）使用各种类型的商业工具。在覆盖系数k = 2的情况下，在0.95置信水平下，粘度，热容量，声速，密度和温度测量的组合扩展不确定性估计分别为0.35％和1.0％（对于两种不同的仪器）1.5分别为％，±0.5 m·s ^–1，（0.05到0.3）kg·m ^–3和0.05K。这些新的实验数据用于基于理论上确定的Vogel–Tamman–Fulcher（VTF）模型开发出广泛的粘度相关性。玻璃温度值（T _g使用从当前粘度测量得出的VTF参数估算IL的）。密度，热容和声速的测量值被用来计算其他非常重要的热力学性质，ķ_小号，ķ _Ť，一个_P，γ _V，Δ ħ，Ç _V，和。