The refractive properties of binary system containing 2-methoxyethanol (ME) and 1,2-dimethoxyethane (DME) have been measured at 15 temperatures in the range, working with the two pure species and 9 mixtures of them, covering the whole miscibility field ( ). Many equations have been checked in order to establish the best relationships stating the dependence of n on temperature and binary composition, by taking into account both the mole fraction (rational) scale and the volume fraction scale. Furthermore, the excess functions nE and RE (excess molar refraction) have been evaluated in order to investigated the existence of solvent-cosolvent complex adducts. As an evidence, we can suggest the presence of two complex moieties, namely 1ME 1DME and 2ME 1DME, which seem to be both thermostable at all investigated temperatures.
The 2-methoxyethanol+1,2-dimethoxyethane binary solvent system. Refractive index and related properties from 0 to 70°C / Franchini, Giancarlo; Marchetti, Andrea; Tassi, Lorenzo; G., Vaccari. - In: JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE. - ISSN 0021-7689. - ELETTRONICO. - 95:(1998), pp. 1929-1950.
The 2-methoxyethanol+1,2-dimethoxyethane binary solvent system. Refractive index and related properties from 0 to 70°C
FRANCHINI, Giancarlo;MARCHETTI, Andrea;TASSI, Lorenzo;
1998
Abstract
The refractive properties of binary system containing 2-methoxyethanol (ME) and 1,2-dimethoxyethane (DME) have been measured at 15 temperatures in the range, working with the two pure species and 9 mixtures of them, covering the whole miscibility field ( ). Many equations have been checked in order to establish the best relationships stating the dependence of n on temperature and binary composition, by taking into account both the mole fraction (rational) scale and the volume fraction scale. Furthermore, the excess functions nE and RE (excess molar refraction) have been evaluated in order to investigated the existence of solvent-cosolvent complex adducts. As an evidence, we can suggest the presence of two complex moieties, namely 1ME 1DME and 2ME 1DME, which seem to be both thermostable at all investigated temperatures.
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