Densities and solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions

Martin P. Breil; Jørgen M. Mollerup; E. Susanne J. Rudolph; Marcel Ottens; Luuk A.M. Van Der Wielen

doi:10.1016/j.fluid.2003.08.010

Densities and solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions

Martin P. Breil, Jørgen M. Mollerup, E. Susanne J. Rudolph, Marcel Ottens, Luuk A.M. Van Der Wielen

Research output: Contribution to journal › Article › peer-review

Abstract

Solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions containing 0-6 molal NaCl, 0-1 molal Na₂SO₄, and 0-1 molal (NH₄)₂SO₄, have been determined experimentally at 298.15K and atmospheric pressure. The solubility of glycylglycine and glycyl-L-alanine in pure water is 1.74 and 4.78mol/kg of water, respectively. The solubility of glycylglycine in salt solutions of NaCl, Na₂SO₄, and (NH₄)₂SO₄ show a moderate salting-in effect. The solubility of glycyl-L-alanine show a minor or no salting-in effect at low salt concentrations and a moderate salting-out effect at higher salt concentrations in NaCl and Na ₂SO₄, and in (NH₄)₂SO₄ the solubility is almost constant. The densities of the solutions have been determined experimentally, and the volume expansions by dissolving salt and dipeptide in water have been calculated.

Original language	English
Pages (from-to)	221-225
Number of pages	5
Journal	Fluid Phase Equilibria
Volume	215
Issue number	2
DOIs	https://doi.org/10.1016/j.fluid.2003.08.010
Publication status	Published - 1 Feb 2004
Externally published	Yes

Keywords

Density
Dipeptides
Electrolyte solution
Glycylglycine
Solubility

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title = "Densities and solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions",

abstract = "Solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions containing 0-6 molal NaCl, 0-1 molal Na2SO4, and 0-1 molal (NH4)2SO4, have been determined experimentally at 298.15K and atmospheric pressure. The solubility of glycylglycine and glycyl-L-alanine in pure water is 1.74 and 4.78mol/kg of water, respectively. The solubility of glycylglycine in salt solutions of NaCl, Na2SO4, and (NH4)2SO4 show a moderate salting-in effect. The solubility of glycyl-L-alanine show a minor or no salting-in effect at low salt concentrations and a moderate salting-out effect at higher salt concentrations in NaCl and Na 2SO4, and in (NH4)2SO4 the solubility is almost constant. The densities of the solutions have been determined experimentally, and the volume expansions by dissolving salt and dipeptide in water have been calculated.",

keywords = "Density, Dipeptides, Electrolyte solution, Glycylglycine, Solubility",

author = "Breil, {Martin P.} and Mollerup, {J{\o}rgen M.} and Rudolph, {E. Susanne J.} and Marcel Ottens and {Van Der Wielen}, {Luuk A.M.}",

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T1 - Densities and solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions

AU - Breil, Martin P.

AU - Mollerup, Jørgen M.

AU - Rudolph, E. Susanne J.

AU - Ottens, Marcel

AU - Van Der Wielen, Luuk A.M.

PY - 2004/2/1

Y1 - 2004/2/1

N2 - Solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions containing 0-6 molal NaCl, 0-1 molal Na2SO4, and 0-1 molal (NH4)2SO4, have been determined experimentally at 298.15K and atmospheric pressure. The solubility of glycylglycine and glycyl-L-alanine in pure water is 1.74 and 4.78mol/kg of water, respectively. The solubility of glycylglycine in salt solutions of NaCl, Na2SO4, and (NH4)2SO4 show a moderate salting-in effect. The solubility of glycyl-L-alanine show a minor or no salting-in effect at low salt concentrations and a moderate salting-out effect at higher salt concentrations in NaCl and Na 2SO4, and in (NH4)2SO4 the solubility is almost constant. The densities of the solutions have been determined experimentally, and the volume expansions by dissolving salt and dipeptide in water have been calculated.

AB - Solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions containing 0-6 molal NaCl, 0-1 molal Na2SO4, and 0-1 molal (NH4)2SO4, have been determined experimentally at 298.15K and atmospheric pressure. The solubility of glycylglycine and glycyl-L-alanine in pure water is 1.74 and 4.78mol/kg of water, respectively. The solubility of glycylglycine in salt solutions of NaCl, Na2SO4, and (NH4)2SO4 show a moderate salting-in effect. The solubility of glycyl-L-alanine show a minor or no salting-in effect at low salt concentrations and a moderate salting-out effect at higher salt concentrations in NaCl and Na 2SO4, and in (NH4)2SO4 the solubility is almost constant. The densities of the solutions have been determined experimentally, and the volume expansions by dissolving salt and dipeptide in water have been calculated.

KW - Density

KW - Dipeptides

KW - Electrolyte solution

KW - Glycylglycine

KW - Solubility

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DO - 10.1016/j.fluid.2003.08.010

M3 - Article

AN - SCOPUS:0742321996

SN - 0378-3812

VL - 215

SP - 221

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JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

IS - 2

ER -

Densities and solubilities of glycylglycine and glycyl-L-alanine in aqueous electrolyte solutions

Abstract

Keywords

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