TES (buffer)

TES (buffer)
Names

IUPAC name 2-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]ethanesulfonic acid
Other names TES free acid
Identifiers
CAS Registry Number	7365-44-8^Y
ChemSpider	73842^N
InChI 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
Jmol-3D images	Image
PubChem	6992013
SMILES C(CS(=O)(=O)O)NC(CO)(CO)CO
Properties
Chemical formula	C₆H₁₅NO₆S
Molar mass	229.25 g/mol
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
N verify (what is: Y/N?)
Infobox references

TES is used to make buffer solutions. It has a pK_a 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 of semen and transport.

References

↑ Goldberg, R.; Kishore, N.; Lennen, R. (2002). "Thermodynamic Quantities for the Ionization Reactions of Buffers" (PDF). J. Phys. Chem. Ref. Data 31: 231–370. doi:10.1063/1.1416902.