7-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate (mTBD acetate) is a protic ionic liquid that is being investigated for use in industrial processes, such as for producing textiles from cellulose. To aid in designing such processes, we have measured the densities, viscosities, and thermal conductivities of mTBD acetate and aqueous mixtures containing mTBD acetate. We also investigated how excess amounts of mTBD or acetic acid affect the density, and found that in general an excess of either component decreases the density. However, when no water is present, the sample with excess acetic acid actually has a slightly higher density than when there is an equimolar amount of acid and base. The maximum density occurs when some water is present (around 30–40 mol%). We also modeled the density data using the ePC-SAFT equation of state and provide simple correlations for calculating the viscosity and thermal conductivity of these mixtures.

中文翻译：

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离子液体 7-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium Acetate 及其与水的混合物的密度、粘度和热导率

7-甲基-1,5,7-三氮杂双环[4.4.0]dec-5-enium 醋酸盐（mTBD 醋酸盐）是一种质子离子液体，正在研究用于工业过程，例如从纤维素生产纺织品。为了帮助设计此类工艺，我们测量了 mTBD 醋酸盐和含有 mTBD 醋酸盐的水性混合物的密度、粘度和热导率。我们还研究了过量的 mTBD 或乙酸如何影响密度，发现通常任何一种成分过量都会降低密度。然而，当不存在水时，含有过量乙酸的样品的密度实际上比等摩尔量的酸和碱时略高。当存在一些水（大约 30-40 mol%）时会出现最大密度。