Research Article

Effect of Hydroxylamine Sulfate on Volumetric Behavior of Glycine, L-Alanine, and L-Arginine in Aqueous Solution

Table 2

Density, ρ, and apparent molar volumes, , of amino acids in aqueous hydroxylamine sulfate solutions as a function of amino acids concentration, , at T = 298.15 K.

mol·kg−1kg·m−3m3·mol−1mol·kg−1kg·m−3m3·mol−1mol·kg−1kg·m−3m3·mol−1

Glycine
 mol·kg−1  mol·kg−1  mol·kg−1
0.00001.007360.00001.021990.00001.03588
0.02051.0080143.320.01991.0226143.670.02001.0364844.53
0.04171.0086643.720.03961.0232044.120.03911.0370444.74
0.06141.0092643.940.06111.0238544.250.05861.0375845.36
0.10431.0105644.140.10221.0250544.640.10041.0387845.43
0.15811.0122044.140.15951.0267044.970.15291.0402645.59
0.21661.0139744.160.19541.0277445.030.20421.0417345.52
0.25881.0152344.210.25031.0293345.050.26351.0434045.54

L-Alanine
 mol·kg−1  mol·kg−1  mol·kg−1
0.00001.007360.00001.021990.00001.03588
0.02041.0079559.970.02031.0225560.710.02071.0364361.20
0.04061.0085160.470.03991.0230761.210.04091.0369362.03
0.06191.0090960.800.05781.0235361.550.05741.0373562.06
0.11631.0105561.210.09781.0245661.850.09881.0383962.18
0.15141.0115061.230.14521.0257961.890.14551.0395262.47
0.20971.0130661.310.18691.0268362.080.19941.0408562.48
0.24651.0140361.360.24841.0283962.120.24421.0419262.58

L-Arginine
 mol·kg−1  mol·kg−1  mol·kg−1
0.00001.007360.00001.021990.00001.03588
0.01981.00825128.480.02011.02286128.870.02011.03672129.19
0.04071.00916129.130.04121.02372130.050.03981.03749130.26
0.06241.01010129.330.06011.02452129.850.06571.03853130.27
0.10081.01174129.550.10141.02617130.430.09681.03973130.60
0.15241.01393129.590.14861.02810130.300.15141.04185130.66
0.20191.01598129.750.19951.03012130.400.19631.04350131.03
0.25181.01804129.760.24711.03190130.780.24601.04536131.05

Molality of amino acids in the mixture of hydroxylamine sulfate + water as pure solvent.