TES (buffer)

TES (buffer)
IUPAC name

2-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]ethanesulfonic acid
Other names

TES free acid
Identifiers
CAS number 7365-44-8
PubChem 81831
Properties
Molecular formula C6H15NO6S
Molar mass 229.25 g/mol
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

TES is used to make buffer solutions. It has a pKa value of 7.550 (I=0, 25°C).[1] It is one of the Good's buffers and can be used to make buffer solutions in the pH range 6.8–8.2.

References

  1. ^ Goldberg, R.; Kishore, N.; Lennen, R. (2002). "Thermodynamic Quantities for the Ionization Reactions of Buffers". J. Phys. Chem. Ref. Data 31: 231–370. doi:10.1063/1.1416902. http://www.nist.gov/data/PDFfiles/jpcrd615.pdf.