Binary diffusion coefficients,D12, of -amino acids with hydroxyl groups, e.g., serine, threonine, allothreonine and homoserine, in dilute aqueous solutions were measured at six different temperatures from 293.2 to 333.2K by the Taylor dispersion method. The determined D12 values of serine and threonine at 298.2K were in good agreement with the published data, whereas no data for allothreonine and homoserine is available in the literature. The D12 values for each amino acid were well represented with the Stokes Einstein equation by adjusting the molecular diameter. The D12 values for amino acids containing hydroxyl groups, except for homoserine, were lower by approximately 5%, on the basis of the same solute molar volume, than those from the corresponding amino acids without hydroxyl groups.
Compounds
#
Formula
Name
1
C3H7NO3
(.+-.)-serine
2
C4H9NO3
DL-threonine
3
C4H9NO3
DL-allothreonine
4
C4H9NO3
DL-2-amino-4-hydroxybutanoic acid
5
H2O
water
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.