2
0
2010
pal
dun
0
journal
Original
Palecz, B.[Bartlomiej]
Dunal, J.[Joanna]
Waliszewski, D.[Dariusz]
J. Chem. Eng. Data
2010
2020-09-29
Enthalpic Interaction Coefficients of Several l-a-Amino Acids in Aqueous Sodium Chloride Solutions at 298.15 K
The enthalpies of solution of l-a-isoleucine, l-a-cysteine, l-a-aspartic acid, and l-a-glutamic acid have been measured in aqueous sodium chloride solutions at 298.15 K. From the obtained experimental results the standard dissolution enthalpies of amino acids in aqueous NaCl solutions have been determined. These data were used to calculate of the heterogeneous enthalpic pair interaction coefficients based on McMillan-Mayer s theory. These values were interpreted in the terms of the hydrophobic or hydrophilic effects of the side chains of amino acids on their interactions with dissociated sodium chloride in water.
10.1021/je100756z
11
55
5216-5218
1
InChI=1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1
AGPKZVBTJJNPAG-WHFBIAKZSA-N
2-amino-3-methylpentanoic acid
(2S,3S)-.alpha.-amino-.beta.-methyl-n-valeric acid
(2S,3S)-.alpha.-amino-.beta.-methylvaleric acid
(2S,3S)-2-amino-3-methylpentanoic acid
(S)-isoleucine
(S,S)-isoleucine
.alpha.-amino-.beta.-methylvaleric acid
2-amino-3-methylvaleric acid
2S,3S-isoleucine
L-(+)-isoleucine
L-isoleucine
L-norvaline, 3-methyl-, erythro-
[S-(R*,R*)]-2-amino-3-methylpentanoic acid
erythro-L-isoleucine
isoleucine
isoleucine, L-
pentanoic acid, 2-amino-3-methyl-, [S-(R*,R*)]-
C6H13NO2
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
2
InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
XUJNEKJLAYXESH-REOHCLBHSA-N
(R)-2-amino-3-mercaptopropanoic acid
L-cysteine
C3H7NO2S
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
3
InChI=1S/C4H7NO4/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H,6,7)(H,8,9)/t2-/m0/s1
CKLJMWTZIZZHCS-REOHCLBHSA-N
L-aminosuccinic acid
L-aspartic acid
C4H7NO4
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
4
InChI=1S/C5H9NO4/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)/t3-/m0/s1
WHUUTDBJXJRKMK-VKHMYHEASA-N
L-glutamic acid
(2S)-2-aminopentanedioic acid
(S)-(+)-glutamic acid
(S)-.alpha.-aminoglutaric acid
(S)-2-aminopentanedioic acid
(S)-glutamic acid
.alpha.-glutamic acid
1-aminopropane-1,3-dicarboxylic acid
2-aminoglutaric acid
L-(+)-glutamic acid
L-.alpha.-aminoglutaric acid
L-2-aminopentanedioic acid
aciglut
glusate
glutacid
glutamic acid, L-
glutamicol
glutamidex
glutaton
pentanedioic acid, 2-amino-, (S)-
C5H9NO4
1
Commercial source
1
99
2
Stated by supplier
2
Crystallization from solution
5
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Synthesized by the authors
1
99.9
3
Estimated by the compiler
6
InChI=1S/ClH.Na/h1H;/q;+1/p-1
FAPWRFPIFSIZLT-UHFFFAOYSA-M
sodium chloride
ClNa
1
Commercial source
1
99.5
3
Stated by supplier
1
1
1
6
1
5
1
Principal objective of the work
DAS
XXX
11/24/2010
1
Molar enthalpy of solution, kJ/mol
ISOPERIBOL
Liquid
Difference with the reference state, X-X(REF)
Pure solute at the same temperature and pressure
Crystal
6
5
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mole fraction
1
Liquid
0
1
2
Temperature, K
Liquid
298.15
5
3
Pressure, kPa
Liquid
101
3
1
Solvent: Molality, mol/kg
6
Liquid
1
0.5
1
1
3.38
3
1
0.08
1
1
2
1
3.64
3
1
0.1
1
1.5
2
1
3.74
3
1
0.12
1
2
2
1
3.88
3
1
0.1
1
2.5
2
1
3.96
3
1
0.1
1
3
2
1
3.98
3
1
0.1
2
2
1
6
1
5
1
Principal objective of the work
DAS
XXX
11/24/2010
1
Molar enthalpy of solution, kJ/mol
ISOPERIBOL
Liquid
Difference with the reference state, X-X(REF)
Pure solute at the same temperature and pressure
Crystal
6
5
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mole fraction
2
Liquid
0
1
2
Temperature, K
Liquid
298.15
5
3
Pressure, kPa
Liquid
101
3
1
Solvent: Molality, mol/kg
6
Liquid
1
0.5
1
1
10.81
4
1
0.13
1
1
2
1
10.55
4
1
0.11
1
1.5
2
1
10.26
4
1
0.12
1
2
2
1
10.04
4
1
0.11
1
2.5
2
1
9.82
3
1
0.12
1
3
2
1
9.62
3
1
0.11
3
3
1
6
1
5
1
Principal objective of the work
DAS
XXX
11/24/2010
1
Molar enthalpy of solution, kJ/mol
ISOPERIBOL
Liquid
Difference with the reference state, X-X(REF)
Pure solute at the same temperature and pressure
Crystal
6
5
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mole fraction
3
Liquid
0
1
2
Temperature, K
Liquid
298.15
5
3
Pressure, kPa
Liquid
101
3
1
Solvent: Molality, mol/kg
6
Liquid
1
0.5
1
1
24.64
4
1
0.3
1
1
2
1
23.69
4
1
0.29
1
1.5
2
1
22.82
4
1
0.27
1
2
2
1
22.32
4
1
0.27
1
2.5
2
1
21.72
4
1
0.27
1
3
2
1
21.32
4
1
0.27
4
4
1
6
1
5
1
Principal objective of the work
DAS
XXX
11/24/2010
1
Molar enthalpy of solution, kJ/mol
ISOPERIBOL
Liquid
Difference with the reference state, X-X(REF)
Pure solute at the same temperature and pressure
Crystal
6
5
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Mole fraction
4
Liquid
0
1
2
Temperature, K
Liquid
298.15
5
3
Pressure, kPa
Liquid
101
3
1
Solvent: Molality, mol/kg
6
Liquid
1
0.5
1
1
26.76
4
1
0.32
1
1
2
1
25.97
4
1
0.33
1
1.5
2
1
25.47
4
1
0.32
1
2
2
1
25.04
4
1
0.3
1
2.5
2
1
24.6
4
1
0.28
1
3
2
1
24.41
4
1
0.3