2-hydroxy-N-(2-hydroxyethyl)-N-methylethanaminium methanesulfonate ([BHEM][mesy]) displayed good ability for separating cellulose from biomass material in previous works. In order to have a better understanding of the structure–property relationship and facilitate further potential applications in industry, it is necessary to obtain more data for the physicochemical properties of [BHEM][mesy] and its mixtures. In this work, the densities (ρ) and viscosities (η) of [BHEM][mesy] + solvents (water, methanol, ethanol, n-propanol and isopropanol) mixtures were measured at six temperatures from (298.15 to 323.15) K over the full molar composition range and fitted by an empirical quadratic equation and Vogel–Fucher–Tammann (VFT) equation. Moreover, the excess molar volumes (VE) and viscosity deviation (Δη) of five binary mixtures were calculated and correlated by the Redlich–Kister equation. In addition, the apparent molar volumes (Vφ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${V}_{\varphi }$$\end{document}) and partial molar volumes (V-\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\stackrel{-}{V}$$\end{document}) of [BHEM][mesy] and solvents were also calculated and all these physicochemical property data (density, viscosity, excess molar properties as well as the apparent molar properties) are discussed in terms of the structure and interaction of binary mixtures.

中文翻译：

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含有多元质子离子液体（2-羟基-N-（2-羟乙基）-N-甲基乙胺甲磺酸盐）和水或醇的二元混合物的密度和粘度

2-羟基-N-(2-羟乙基)-N-甲基乙胺甲磺酸盐 ([BHEM][mesy]) 在以前的工作中表现出良好的从生物质材料中分离纤维素的能力。为了更好地理解结构-性能关系并促进其在工业中的进一步潜在应用，有必要获得更多[BHEM][mesy]及其混合物的理化性质数据。在这项工作中，[BHEM][mesy] + 溶剂（水、甲醇、乙醇、正丙醇和异丙醇）混合物的密度 (ρ) 和粘度 (η) 在从 (298.15 到 323.15) K 的六个温度下测量完整的摩尔组成范围并通过经验二次方程和 Vogel-Fucher-Tammann (VFT) 方程拟合。而且，五种二元混合物的过量摩尔体积 (VE) 和粘度偏差 (Δη) 通过 Redlich-Kister 方程计算和关联。此外，表观摩尔体积 (Vφ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{ upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${V}_{\varphi }$$\end{document}) 和偏摩尔体积 (V-\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} [BHEM][mesy] 和溶剂的 $$\stackrel{-}{V}$$\end{document}) 和所有这些物理化学性质数据（密度、粘度、