Abstract This work focuses on the determination of important thermochemical properties of several chemical warfare agent (CWA) simulants: diethyl methylphosphonate (DEMP, CAS 683-08-9, 1), triethyl phosphate (TEP, CAS 78-40-0, 2), malathion (CAS 121-75-5, 3) and methyl salicylate (MS, 119-36-8, 4). Enthalpies of vaporization Δ l g H m o (298.15 K) (1: 56.8 ± 0.8 kJ mol−1; 2: 63.9 ± 0.9 kJ mol−1; 3: 101.4 ± 1.8 kJ mol−1; 4: 59.3 ± 0.8 kJ mol−1) and vapor pressures psat (298.15 K) (1: 43.9 Pa; 2: 12.5 Pa; 3: 1.4 mPa; 4: 14.5 Pa) were determined by the transpiration method in the ambient temperature range. The results were compared with existing literature values and critically evaluated. Data of DEMP 1, TEP 2 and MS 4 show agreement with most literature vaes, while results of malathion 3 show a significant disagreement with the scarce available literature p-T data.

中文翻译：

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CWA 模拟物的实验热化学数据：磷酸三乙酯、甲基膦酸二乙酯、马拉硫磷和水杨酸甲酯

摘要 本工作重点测定几种化学战剂 (CWA) 模拟物的重要热化学性质：甲基膦酸二乙酯 (DEMP, CAS 683-08-9, 1)、磷酸三乙酯 (TEP, CAS 78-40-0, 2) , 马拉硫磷 (CAS 121-75-5, 3) 和水杨酸甲酯 (MS, 119-36-8, 4)。蒸发焓 Δ lg H mo (298.15 K) (1: 56.8 ± 0.8 kJ mol−1; 2: 63.9 ± 0.9 kJ mol−1; 3: 101.4 ± 1.8 kJ mol−1; 4: 59.3 ± 0.8 kJ mol−1 1) 和蒸气压 psat (298.15 K) (1: 43.9 Pa; 2: 12.5 Pa; 3: 1.4 mPa; 4: 14.5 Pa) 在环境温度范围内通过蒸腾法测定。将结果与现有文献值进行比较并进行批判性评估。DEMP 1、TEP 2 和 MS 4 的数据显示与大多数文献一致，