TAPSO (buffer)

TAPSO (buffer)
IUPAC name

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

3-[N-Tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonic acid
Identifiers
CAS number 68399-81-5
PubChem 109334
Properties
Molecular formula C7H17NO7S
Molar mass 259.28 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

TAPSO is used to make buffer solutions. It has a pKa value of 7.635 (I=0, 25°C).[1] It can be used to make buffer solutions in the pH range 7.0-8.2.

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.