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Merck
CN

T0772

TES sodium salt

≥99% (titration)

Synonym(s):

Sodium 2-((1,3-dihydroxy-2-(hydroxymethyl)-propan-2-yl)amino)ethane sulfonate, TES NA, N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid sodium salt

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About This Item

Empirical Formula (Hill Notation):
C6H14NNaO6S
CAS Number:
70331-82-7
Molecular Weight:
251.23
MDL number:
MFCD00065482
UNSPSC Code:
12161700
PubChem Substance ID:
24899912
NACRES:
NA.25

Key Documents

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Assay

≥99% (titration)

form

crystalline powder

impurities

≤7% water content (Karl Fischer)

useful pH range

6.8-8.2

pKa (25 °C)

7.5

solubility

water: 0.333 g/mL, clear to slightly hazy, colorless

cation traces

Pb: ≤5 ppm

application(s)

diagnostic assay manufacturing

SMILES string

[Na+].OCC(CO)(CO)NCCS([O-])(=O)=O

InChI

1S/C6H15NO6S.Na/c8-3-6(4-9,5-10)7-1-2-14(11,12)13;/h7-10H,1-5H2,(H,11,12,13);/q;+1/p-1

InChI key

GUXMFAHOYNRHBI-UHFFFAOYSA-M

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General description

TES sodium salt belongs to the category of zwitterionic buffers that contain ionizable groups of both positive and negative charges. It has a high water solubility and can effectively stabilize pH levels within the physiological pH range of 6.8 to 8.2 over a broad range of temperatures. TES sodium salt is used in the preparation of electrophoresis buffers. It is one of the commonly used Good buffers in biochemistry and molecular biology research.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000496256
0000496257
0000496256
0000496257
0000379140

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The use of gel and capillary electrophoresis to investigate some of the fundamental physical properties of DNA
Stellwagen N, et al.
Electrophoresis, 23(2), 167-175 (2002)
TES buffer-induced phase separation of aqueous solutions of several water-miscible organic solvents at 298.15 K: phase diagrams and molecular dynamic simulations
Taha M and Jer Lee M
Journal of Chemical Physics, 138(24), 244501-244501 (2013)
R Nakon et al.
Science (New York, N.Y.), 221(4612), 749-750 (1983-08-19)
Metal-ion affinity (formation) constants were determined for two "Good's" buffers, N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid (TES) and N,N-bis(2-hydroxyethyl)glycine (bicine). The metal chelates formed undergo loss of an internal ligand (alcohol) proton (bicine) and undergo hydrolysis (bicine and TES) and dimerization reactions (TES). Bicine
A T Palasz et al.
Theriogenology, 70(9), 1461-1470 (2008-08-05)
The effect of the zwitterionic buffers HEPES, TES and MOPS and of PBS used for out-of-incubator procedures during standard in vitro embryo production on bovine oocytes and embryo development, morphology and on the expression patterns of eight selected genes: Fgf-4

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