The extrathermodynamic parameters, relative permittivity (epsilon-r) and refractive index (n), have been measured for ethane-1,2-diol-2-methoxyethanol binary mixtures over the entire composition range, at various temperatures ranging between - 10 and 80-degrees-C. For this system, as far as for many solvent-cosolvent systems which are useful for analytical and electrochemical applications, the properties cited above are continuous but not linear functions of the binary composition. Various equations have been applied in order to establish the best regression models for the relationship y = f(X), where X is the composition of the mixture. On the whole, minima occurred in the excess function (epsilon-E), showing the existence of various solvent-cosolvent complexes of different stoichiometric ratios (2:1, 1:1 or 1:2) and of different thermostabilities, which may be interpreted in terms of moderate interactions such as dipolarity, polarizability and hydrogen bonding between the mixed solvents. Among the above complexes, the ethane-1,2-diol-2-methoxyethanol 1:2 adduct is suggested to be the true 'limiting mixture', on the borderline between the types of behaviour typical of the two pure solvents. Furthermore, empirical patterns in the refractive index were used to scrutinize the most important mixing rules in order to determine the properties of the mixture on the basis of those of its pure components.

Ethane-1,2-diol - 2-methoxyethanol solvent system. Dependence of the relative permittivity and refractive index on the temperature and composition of the binary mixture / Franchini, Giancarlo; Marchetti, Andrea; M., Tagliazucchi; Tassi, Lorenzo; Tosi, Giuseppe. - In: JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS. - ISSN 0956-5000. - ELETTRONICO. - 87:(1991), pp. 2583-2588.

Ethane-1,2-diol - 2-methoxyethanol solvent system. Dependence of the relative permittivity and refractive index on the temperature and composition of the binary mixture

FRANCHINI, Giancarlo;MARCHETTI, Andrea;TASSI, Lorenzo;TOSI, Giuseppe
1991

Abstract

The extrathermodynamic parameters, relative permittivity (epsilon-r) and refractive index (n), have been measured for ethane-1,2-diol-2-methoxyethanol binary mixtures over the entire composition range, at various temperatures ranging between - 10 and 80-degrees-C. For this system, as far as for many solvent-cosolvent systems which are useful for analytical and electrochemical applications, the properties cited above are continuous but not linear functions of the binary composition. Various equations have been applied in order to establish the best regression models for the relationship y = f(X), where X is the composition of the mixture. On the whole, minima occurred in the excess function (epsilon-E), showing the existence of various solvent-cosolvent complexes of different stoichiometric ratios (2:1, 1:1 or 1:2) and of different thermostabilities, which may be interpreted in terms of moderate interactions such as dipolarity, polarizability and hydrogen bonding between the mixed solvents. Among the above complexes, the ethane-1,2-diol-2-methoxyethanol 1:2 adduct is suggested to be the true 'limiting mixture', on the borderline between the types of behaviour typical of the two pure solvents. Furthermore, empirical patterns in the refractive index were used to scrutinize the most important mixing rules in order to determine the properties of the mixture on the basis of those of its pure components.
87
2583
2588
Ethane-1,2-diol - 2-methoxyethanol solvent system. Dependence of the relative permittivity and refractive index on the temperature and composition of the binary mixture / Franchini, Giancarlo; Marchetti, Andrea; M., Tagliazucchi; Tassi, Lorenzo; Tosi, Giuseppe. - In: JOURNAL OF THE CHEMICAL SOCIETY. FARADAY TRANSACTIONS. - ISSN 0956-5000. - ELETTRONICO. - 87:(1991), pp. 2583-2588.
Franchini, Giancarlo; Marchetti, Andrea; M., Tagliazucchi; Tassi, Lorenzo; Tosi, Giuseppe
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/307409
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 40
  • ???jsp.display-item.citation.isi??? 45
social impact