TES (buffer)

TES
Names
Preferred IUPAC name
2-{[1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl]amino}ethane-1-sulfonic acid
Other names
TES free acid
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.028.097 Edit this at Wikidata
UNII
  • InChI=1S/C6H15NO6S/c8-3-6(4-9,5-10)7-1-2-14(11,12)13/h7-10H,1-5H2,(H,11,12,13) ☒N
    Key: JOCBASBOOFNAJA-UHFFFAOYSA-N ☒N
  • InChI=1/C6H15NO6S/c8-3-6(4-9,5-10)7-1-2-14(11,12)13/h7-10H,1-5H2,(H,11,12,13)
    Key: JOCBASBOOFNAJA-UHFFFAOYAR
  • C(CS(=O)(=O)O)NC(CO)(CO)CO
Properties
C6H15NO6S
Molar mass 229.25 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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. It is one of the components of Test yolk buffer medium used for refrigeration and transport of semen.

References

  1. ^ Goldberg, R.; Kishore, N.; Lennen, R. (2002). "Thermodynamic Quantities for the Ionization Reactions of Buffers" (PDF). J. Phys. Chem. Ref. Data. 31 (2): 231–370. doi:10.1063/1.1416902. Archived from the original (PDF) on 2008-10-06. Retrieved 2017-07-13.

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