Densities, viscosities, and speed of sound have been determined at T？=？(303.15, 308.15, and 313.15)？K for the binary mixtures of methyl benzoate with tetrahydrofuran, 1,4-dioxane, anisole, and butyl vinyl ether over the entire range of composition. Using these measured values, excess volume , deviation in viscosities , excess Gibb’s free energy of activation for viscous flow , and deviation in isentropic compressibility have been calculated. These calculated binary data have been fitted to Redlich-Kister equation to determine the appropriate coefficients. The values of excess volume and deviation in viscosities are negative over the entire range of composition for all the binary systems at the studied temperatures. The behavior of these parameters with composition of the mixture has been discussed in terms of molecular interactions between the components of liquids. 1. Introduction The excess or deviation properties of liquid-liquid mixtures are useful in several industrial applications owing to their influence upon the effectiveness of the operations. Nowadays, the determination of ultrasonic velocity and the related acoustical parameters derived from it has attracted the attention of several researchers. Much work has been done in solutions of polymers [1–3], pharmamaterials [4], electrolytes [5–7], and nonelectrolytes [8–10]. Tetrahydrofuran is a polar , aprotic solvent. It’s main use is a precursor to polymers. It is also used as an industrial solvent for PVC and in varnishes. Dye carrier formulations based on methyl benzoate are useful in textile processing. Further methyl benzoate finds its primary uses as a perfume or flavouring agent and also used as a source of benzoyl radical. While ethers are excellent solvents, because they are relatively unreactive, yet they solvate a wide variety of compounds. Tetrahydrofuran, a cyclic ether which is one of the most polar simple ethers, is used as a solvent for polymers and also commercially used for the production of several compounds. Anisole, an aryl ether, is a major constituent of essential oil of anise seed. In view of the abovementioned significances, these solvents are chosen with an aim to investigate the effect of the presence of two lone pairs of electrons on the oxygen atom of ether, when it is mixed with methyl benzoate. Moreover, it would be interesting to know the behavior of ether in an environment of aromatic ester molecules. The main objective of the present study is to determine the density , viscosity , and speed of sound for the binary mixtures formed by the methyl benzoate with ether
References
[1]
J. N. Prassianakis, “Correlation of mechanical and acoustical properties of plasticized epoxy polymers,” Journal of Applied Polymer Science, vol. 39, no. 10, pp. 2031–2041, 1990.
[2]
V. Kannappan, S. Mahendran, P. Sathyamoorthy, and D. Roopsingh, “Ultrasonic method of determination of glass transition temperatures of certain thermotropic liquid crystalline co-polyesters,” Journal of Polymer Materials, vol. 18, no. 4, pp. 409–416, 2001.
[3]
D. R. Godhani and P. H. Parsania, “Studies on acoustical properties of poly(4,4′-diphenylphthalidediphenyl-4,4′-disulfonate) at 30°C,” Journal of the Indian Chemical Society, vol. 79, no. 7, pp. 620–622, 2002.
[4]
M. Levina and M. H. Rubinstein, “The effect of ultrasonic vibration on the compaction characteristics of paracetamol,” Journal of Pharmaceutical Sciences, vol. 89, no. 6, pp. 705–723, 2000.
[5]
V. K. Syal, V. Bhalla, and S. Chauhan, “Ultrasonic studies of some tetraalkylammonium salts in acetonitrile+dioxane mixtures at 35°C,” Acustica, vol. 81, no. 3, pp. 276–278, 1995.
[6]
D. Geetha and P. S. Ramesh, “Ultrasonic studies on polymer blend (natural/synthetic) in strong electrolyte solutions,” Journal of Molecular Liquids, vol. 136, no. 1-2, pp. 50–53, 2007.
[7]
E. S. Balankina and A. K. Lyaschenko, “The acoustical and structural changes of aqueous solutions due to transition to molten supercooled salts,” Journal of Molecular Liquids, vol. 101, no. 1–3, pp. 273–283, 2002.
[8]
M. Gowrishankar, S. Sivarambabu, P. Venkateswarlu, and K. S. Kumar, “Excess volumes, speeds of sound, isentropic compressibilities and viscosities of binary mixtures of N-ethyl aniline with some aromatic ketones at 303.15？K,” Bulletin of the Korean Chemical Society, vol. 33, no. 5, pp. 1686–1692, 2012.
[9]
A. C. H. Chandrasekhar, S. K. RamanJaneyulu, and A. Krishnaiah, “Volumetric and ultrasonic behaviour of acetophenone and alcohol mixtures,” Physics and Chemistry of Liquids, vol. 19, no. 3, pp. 171–179, 1989.
[10]
M. Yasmin, K. P. Singh, S. Parveen, M. Gupta, and J. P. Shukla, “Thermoacoustical excess properties of binary liquid mixtures: a comparative experimental and theoretical study,” Acta Physica Polonica A, vol. 115, no. 5, pp. 890–900, 2009.
[11]
M. V. Rathnam, R. T. Sayed, K. R. Bhanushali, and M. S. S. Kumar, “Molecular interaction study of binary mixtures of methyl benzoate: viscometric and ultrasonic study,” Journal of Molecular Liquids, vol. 166, pp. 9–16, 2012.
[12]
M. V. Rathnam, S. Mankumare, and M. S. S. Kumar, “Density, viscosity, and speed of sound of (Methyl Benzoate？+？Cyclohexane), (Methyl Benzoate？+？n-Hexane), (Methyl Benzoate？+？Heptane), and (Methyl Benzoate？+？Octane) at temperatures of (303.15, 308.15, and 313.15)？K,” Journal of Chemical and Engineering Data, vol. 55, no. 3, pp. 1354–1358, 2010.
[13]
M. V. Rathnam, S. Mohite, and M. S. Kumar, “Thermophysical properties of isoamyl acetate or methyl benzoate？+？hydrocarbon binary mixtures, at (303.15 and 313.15)？K,” Journal of Chemical and Engineering Data, vol. 54, no. 2, pp. 305–309, 2009.
[14]
P. J. Raju, K. Rambabu, D. Ramchandran, M. Nagshwar Rao, and C. Rambabu, “Densities, adiabatic compressibility, freelength, viscosities and excess volumes of dimethyl sulfoxide with some aromatic esters at 303.15-318.15？K,” Physics and Chemistry of Liquids, vol. 34, pp. 51–60, 1997.
[15]
B. Garcia, R. Alcade, S. Aparicio, and J. M. Leal, “Volumetric properties, viscosities and refractive indices of binary mixed solvents containing methyl benzoate,” Physical Chemistry Chemical Physics, vol. 4, pp. 5833–5840, 2002.
[16]
Y. W. Sheu and C. H. Tu, “Densities, viscosities, refractive indices, and surface tensions for 12 flavor esters from T？=？288.15？K to T？=？358.15？K,” Journal of Chemical and Engineering Data, vol. 50, no. 5, pp. 1706–1710, 2005.
[17]
Y. W. Sheu and C. H. Tu, “Densities and viscosities of binary mixtures of ethyl acetoacetate, ethyl isovalerate, methyl benzoate, benzyl acetate, ethyl salicylate, and benzyl propionate with ethanol at T？=？(288.15, 298.15, 308.15, and 318.15)？K,” Journal of Chemical and Engineering Data, vol. 51, no. 2, pp. 545–553.
[18]
T. M. Aminabhavi, S. K. Raikar, and R. H. Balundgi, “Densities, viscosities, refractive indices, and speeds of sound in methyl acetoacetate？+？methyl acetate,？+？ethyl acetate,？+？n-butyl acetate,？+？methyl benzoate, and？+？ethyl benzoate at 298.15, 303.15, and 308.15？K,” Journal Of Chemical And Engineering Data, vol. 38, no. 3, pp. 441–445, 1993.
[19]
A. M. Blanco, J. Ortega, B. Garcia, and J. M. Leal, “Studies on densities and viscosities of binary mixtures of alkyl benzoates in n-heptane,” Thermochimica Acta, vol. 222, no. 1, pp. 127–136, 1993.
[20]
B. Garcia, R. Alcade, S. Aparicio, and J. M. Leal, “Thermophysical behavior of methylbenzoate？+？n-alkanes mixed aolvents: application of cubic equations of state and viscosity models,” Industrial and Engineering Chemistry Research, vol. 41, no. 17, pp. 4399–4408, 2002.
[21]
T. M. Aminabhavi and S. K. Raikar, “Thermodynamic interactions in binary mixtures of 2-methoxyethanol with alkyl and aryl esters at 298. 15, 303. 15 and 308. 15？K,” Collection of Czechoslovak Chemical Communications, vol. 58, pp. 1761–1776, 1993.
[22]
A. K. Nain, “Densities and volumetric properties of binary mixtures of tetrahydrofuran with some aromatic hydrocarbons at temperatures from 278.15 to 318.15？K,” Journal of Solution Chemistry, vol. 35, no. 10, pp. 1417–1439, 2006.
[23]
A. G. Oskoei, N. Sataei, and J. Ghasemi, “Densities and viscosities for binary and ternary mixtures of 1, 4-dioxane？+？1-hexanol？+？N,N-dimethylaniline from T？=？(283.15 to 343.15)？K,” Journal of Chemical and Engineering Data, vol. 53, no. 2, pp. 343–349, 2008.
[24]
J. G. Baragi, M. I. Aralaguppi, T. M. Aminabhavi, M. Y. Kariduraganavar, and S. S. Kulkarni, “Density, viscosity, refractive index, and speed of sound for binary mixtures of 1,4-dioxane with different organic liquids at (298.15, 303.15, and 308.15)？K,” Journal of Chemical and Engineering Data, vol. 50, no. 3, pp. 917–923, 2005.
[25]
J. A. Al-Kandary, A. S. Al-Jimaz, and A.-H. M. Abdul-Latif, “Viscosities, densities, and speeds of sound of binary mixtures of benzene, toluene, o-xylene, m-xylene, p-xylene, and mesitylene with anisole at (288.15, 293.15, 298.15, and 303.15)？K,” Journal of Chemical and Engineering Data, vol. 51, no. 6, pp. 2074–2082, 2006.
[26]
J. N. Nayak, M. I. Aralaguppi, and T. M. Aminabhavi, “Density, viscosity, refractive index, and speed of sound in the binary mixtures of ethyl chloroacetate with aromatic liquids at 298.15, 303.15, and 308.15？K,” Journal of Chemical and Engineering Data, vol. 47, no. 4, pp. 964–969, 2002.
[27]
T. M. Aminabhavi, H. T. S. Phayde, R. S. Khinnavar, B. Gopalakrishna, and K. C. Hansen, “Densities, refractive indices, speeds of sound, and shear viscosities of diethylene glycol dimethyl ether with ethyl acetate, methyl benzoate, ethyl benzoate, and diethyl succinate in the temperature range from 298.15 to 318.15？K,” Journal of Chemical and Engineering Data, vol. 39, no. 2, pp. 251–260, 1994.
[28]
J. A. Reddick, W. B. Bunger, and T. K. Sakano, Organic Solvents, Physical Properties and Method of Purification, Techniques of Chemistry, II, Wiley-Interscience, New York, NY, USA, 1986.
[29]
O. Redlich and A. T. Kister, “Algebraic representation of thermodynamic properties and the classification of solutions,” Industrial and Engineering Chemistry Research, vol. 40, no. 2, pp. 345–348.
[30]
C. Yang, P. Ma, and Q. Zhouy, “Excess molar volumes and viscosities of binary mixtures of sulfolane with benzene, toluene, ethylbenzene, p-Xylene, o-Xylene, and m-Xylene at 303.15 and 323.15？K and atmospheric pressure,” Journal of Chemical and Engineering Data, vol. 49, pp. 881–885, 2004.
[31]
R. J. Fort and W. R. Moore, “Viscosities of binary liquid mixtures,” Transactions of the Faraday Society, vol. 62, pp. 1112–1119, 1966.
[32]
R. P. Rastogi, J. Nath, and J. Misra, “Thermodynamics of weak interactions in liquid mixtures. I. Mixtures of carbon tetrachloride, benzene, toluene, and p-xylene,” Journal of Physical Chemistry, vol. 71, no. 5, pp. 1277–1286, 1967.
[33]
M. V. Kaulgud, “Ultrasonic velocity and compressibility in Binary liquid mixtures,” Zeitschrift Für Physikalische Chemie, vol. 36, pp. 365–370, 1963.
[34]
R. PalePu, J. Oliver, and B. Mackinnon, “Viscosities and densities of binary liquid mixtures of m-cresol with substituted anilines,” Canadian Journal of Chemistry, vol. 63, no. 5, pp. 1024–1030, 1985.
[35]
T. M. Reed III and T. E. Taylor, “Viscosities of liquid mixtures,” Journal of Physical Chemistry, vol. 63, no. 1, pp. 58–67, 1959.
[36]
R. Mehra and M. Pancholi, “Effect of temperature variation on acoustic and thermodynamic properties in the multicomponent system of heptane？+？1-dodecanol？+？cyclohexane at 298, 308 and 318？K and suitability of different theories of sound speed,” Journal of the Indian Chemical Society, vol. 83, no. 11, pp. 1149–1152, 2006.
[37]
A. Ali, A. K. Nain, D. Chand, and B. Lal, “Molecular interactions in binary mixtures of anisole with benzyl chloride, chlorobenzene and nitrobenzene at 303.15？K: an ultrasonic, volumetric, viscometric and refractive index study,” Indian Journal of Chemistry A, vol. 44, no. 3, pp. 511–515, 2005.
[38]
R. Palani and K. Meenakshi, “Investigation of molecular interactions in ternary liquid mixtures using ultrasonic velocity,” Indian Journal of Chemistry A, vol. 46, no. 2, pp. 252–257, 2007.
