Empirical polarity parameters for some binary solvent mixtures

1981 ◽  
Vol 34 (5) ◽  
pp. 933 ◽  
Author(s):  
S Balakrishnan ◽  
AJ Easteal
Keyword(s):  
Solvent Polarity ◽  
The Other ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Additive Functions ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
Highly Correlated ◽  
Ethanol Ethanol ◽  
Polarity Parameters

Values of the empirical solvent polarity parameters ET and Z have been determined as a function of composition for the binary solvent systems 1,2-dibromoethane + 1,2-dibromopropane, acetone + chloroform, acetone + ethanol, ethanol + chloroform and acetone + dichloromethane. For the 1,2-dibromoethane + 1,2-dibromopropane system both ET and Z are accurately linear (i.e. additive) functions of composition. For the other systems both parameters vary with composition in a strongly non-additive manner, and the deviations from additivity are interpreted in terms of intermolecular interactions. For these systems, in general ET and Z are not highly correlated, and neither parameter is highly correlated with other macroscopic properties or parameters derived from them.

scholarly journals Thermodynamic Studies of Complexes of Amlodipine Besylate with Ni2+, Mg2+, Co2+ and Ca2+ cations in pure and in mixed binary solvent systems at 303.15, 313.15 and 323.15 K by Conductometric Method

2020 ◽  
Vol 13 (1) ◽  
pp. 206-216
Author(s):  
Dhruvi. R. Mehta ◽  
Raviprakash S. Chandra ◽  
M. M. Maisuria
Keyword(s):  
Driving Force ◽  
Binary Solvent ◽  
Complexation Reaction ◽  
Solvent Mixtures ◽  
Amlodipine Besylate ◽  
Linear Change ◽  
Conductometric Method ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
The Stability

The present work relates to the complexation reaction between Amlodipine Besylate[AML] with Ni2+, Mg2+, Co2+ and Ca2+ cation in dimethylsulfoxide (DMSO), pure methanol (MeOH) and their binary mixtures(DMSO-MeOH and DMSO-Water) by conductometric method. The conductance data show that the stoichiometry of the complexes formed between AML with Ni2+, Mg2+, Co2+ and Ca2+ cation in pure DMSO, pure MeOHas well as in the binary solvent mixtures was 1:1. The stability of AML complexes with Ni2+ , Mg2+, Co2+ and Ca2+ metal ion was observed to be sensitive to the nature of the solvent system. In case of DMSO-Water binary solvent systems there was a linear change in LogKf values but in case of DMSO-MeOH binary solvent systems non linear change in LogKf values observed.The negative values of ΔG0 show that the reaction is spontaneous and ability of the AML ligand to form stable complexes. However, the result shows positive value of ΔH0 which indicates that enthalpy is not driving force for the formation of the complexes. Furthermore, the positive value of ΔS0 indicates that entropy is a driving force for the complexation. The values of ΔH0 and ΔS0 for formation of the complexes were obtained from temperature dependence of the stability constants.

Adsorption of Poly(vinyl butyral) in Nonaqueous Ferrite Suspensions

1997 ◽  
Vol 12 (4) ◽  
pp. 1062-1068 ◽  
Author(s):  
Jau-Ho Jean ◽  
Shun-Fen Yeh ◽  
Chi-Jen Chen
Keyword(s):  
Binary Solvent ◽  
Hydroxyl Groups ◽  
Ferrite Powder ◽  
Solvent Mixtures ◽  
Hydroxyl Content ◽  
Surface Hydroxyl ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
Vinyl Butyral ◽  
Poor Solvent

The adsorption of poly(vinyl butyral) (PVB) on NiCuZn ferrite powder in binary solvent systems of 1-butanol and toluene has been investigated. The adsorption isotherms of different PVB's on ferrite powder from various solvent mixtures follow closely the Langmuir monolayer types and can be explained by adsorption competition between solvents and PVB. A relatively poor solvent for PVB increases its adsorption on ferrite powder and thus improves the dispersion of the powder in the nonaqueous suspension. The adsorbance of PVB increases with increasing hydroxyl content in PVB suggesting that PVB is bonding strongly to the protruding surface hydroxyl groups on ferrite powder.

Solvation properties of protic ionic liquid–molecular solvent mixtures

2020 ◽  
Vol 22 (19) ◽  
pp. 10995-11011 ◽  
Author(s):  
Dilek Yalcin ◽  
Andrew J. Christofferson ◽  
Calum J. Drummond ◽  
Tamar L. Greaves
Keyword(s):  
Ionic Liquid ◽  
Binary Mixtures ◽  
Binary Solvent ◽  
Solvent Mixtures ◽  
Protic Ionic Liquid ◽  
Ethylammonium Nitrate ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
Molecular Solvents

In this study, we have investigated the solvation properties of binary mixtures of PILs with molecular solvents. The selected binary solvent systems are the PILs ethylammonium nitrate (EAN) and propylammonium nitrate (PAN) combined with either water, methanol, acetonitrile or DMSO.

Measurement and Correlation for Solubility of Myo-inositol in Five Pure and Four Binary Solvent Systems

2021 ◽  
Author(s):  
Ying Guo ◽  
Hui He ◽  
Haishuang Huang ◽  
Jingxuan Qiu ◽  
Jiaming Han ◽  
...  
Keyword(s):  
Binary Solvent ◽  
Binary Solvent Systems ◽  
Solvent Systems

Effect of modification of binary solvent molecules on ε-CL-20 crystal morphology: a molecular dynamics study

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yanpeng Zhao ◽  
Guanwen Su ◽  
Guozhao Liu ◽  
Hongyuan Wei ◽  
Leping Dang
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Crystal Morphology ◽  
Dynamics Simulation ◽  
Binary Solvent ◽  
Binary Solvent Systems ◽  
Solvent Systems ◽  
Solvent Molecules

The effects of thirteen binary solvent systems on the growth of CL-20 were studied by molecular dynamics simulation, and the effect of antisolvent properties on the solvent inhibition was systematically investigated.

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