TES (buffer)

TES
Names
	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 ;
3D model (JSmol)	Interactive image;
ChemSpider	73842 ;
ECHA InfoCard	100.028.097
PubChem CID	6992013;
UNII	L173DK6289 ;
CompTox Dashboard (EPA)	DTXSID3064643 ;
	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) Key: JOCBASBOOFNAJA-UHFFFAOYSA-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;
	SMILES C(CS(=O)(=O)O)NC(CO)(CO)CO;
Properties
Chemical formula	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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	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 and transport of semen.

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.

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[1] 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.