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. 2020 Apr 1;25(7):1626. doi: 10.3390/molecules25071626

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Comparison of the behavior of the speed of sound versus the temperature for the proposed model and literature models for four members of the DES family having benzyl trimethyl ammonium chloride as the HBA and the different HBDs of ethylene glycol(DES8) (A), diethylene glycol (DES9) (B), triethylene glycol (DES10) (C) and glycerol (DES11) (D). Experimental data o, proposed model ―, Haghbakhsh et al.’s model [24] ---, Gardas and Coutinho’s model [27] ― ―, Hekayati and Esmaeilzadeh’s model [28] · – · – and Singh and Singh’s model [29] ···.

Comparison of the behavior of the speed of sound versus the temperature for the proposed model and literature models for four members of the DES family having benzyl trimethyl ammonium chloride as the HBA and the different HBDs of ethylene glycol(DES8) (A), diethylene glycol (DES9) (B), triethylene glycol (DES10) (C) and glycerol (DES11) (D). Experimental data o, proposed model ―, Haghbakhsh et al.’s model [24] ---, Gardas and Coutinho’s model [27] ― ―, Hekayati and Esmaeilzadeh’s model [28] · – · – and Singh and Singh’s model [29] ···.