Vapor Pressure and Its Temperature Dependence of 28 Organic Compounds: Cyclic Amines, Cyclic Ethers, and Cyclic and Open Chain Secondary Alcohols
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- 作者：Luciano Lepori ; Enrico MatteoliPaolo Gianni
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2017
- 出版时间：January 12, 2017
- 年：2017
- 卷：62
- 期：1
- 页码：194-203
- 全文大小：428K
- ISSN：1520-5134
文摘
The vapor pressures p of 28 organic compounds were accurately measured by a static method in the temperatures range (273 to 323) K. These include cyclic amines (CH2)nNH with n = 2–7, N-methylpyrrolidine, N-methylpiperidine, morpholine, N-methylmorpholine, piperazine, N-methylpiperazine, N,N′-dimethylpiperazine), cyclic ethers (tetrahydrofuran, 2-methyltetrahydrofuran, 2,5-dimethyltetrahydrofuran, tetrahydropyran, 1,3-dioxolan, 1,4-dioxan), cyclic and open-chain secondary alcohols (cyclopentanol, cyclohexanol, cycloheptanol, 2-butanol, 3-pentanol, 3-hexanol, 4-heptanol), as well as 2-methoxyethylamine and 3-methoxypropylamine. For six substances, no p data were already available in the literature at any temperature, and for another eight only one paper each was found. The parameters of the Antoine equation were determined to allow interpolation and extrapolation of the experimental results. The enthalpy of vaporization, ΔvapH, at 298.15 was obtained for each compound from the derivative dp/dT. For nine compounds, ΔvapH values had not been determined before. Either p and ΔvapH at 298.15 K for all substances considered were compared with available literature values. For p, the disagreement is less than 1% for 10 substances and (1 to 3) % for another 8 compounds; for ΔvapH, it is less than 1% with respect to 18 literature data, of which 10 are calorimetric. All these confirm the high precision of p measurements here reported.