Experimental thermochemical data of CWA simulants: Triethyl phosphate, diethyl methylphosphonate, malathion and methyl salicylate

Bikelyte, Greta; Haertel, Martin A. C.; Klapötke, Thomas M.; Krumm, Burkhard und Sadaunykas, Audrius (2020): Experimental thermochemical data of CWA simulants: Triethyl phosphate, diethyl methylphosphonate, malathion and methyl salicylate. In: Journal of Chemical Thermodynamics, Bd. 143, 106043

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 Delta(g)(l) 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 p(sat) (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. (C) 2020 Elsevier Ltd.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 0021-9614
• Sprache: Englisch