Skip to Content
Merck
CN
All Photos(1)

Key Documents

View All Documentation

93359

Sigma-Aldrich

TES

BioUltra, ≥99.5% (calc. based on dry substance, T)

Synonym(s):

2-[(2-Hydroxy-1,1-bis(hydroxymethyl)ethyl)amino]ethanesulfonic acid, N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulfonic acid, TES free acid

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C6H15NO6S
CAS Number:
7365-44-8
Molecular Weight:
229.25
Beilstein:
1957061
EC Number:
230-906-3
MDL number:
MFCD00007532
UNSPSC Code:
12161700
PubChem Substance ID:
57653539
NACRES:
NA.25

product line

BioUltra

Assay

≥99.5% (calc. based on dry substance, T)

form

powder

impurities

insoluble matter, passes filter test

ign. residue

≤0.1% (as SO4)

loss

≤0.5% loss on drying, 110 °C

pH

3.5-5.0 (25 °C, 1 M in H2O)

useful pH range

6.8-8.2

pKa (25 °C)

7.5

mp

~225 °C (dec.)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤500 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤200 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: 0.055
λ: 280 nm Amax: 0.045

SMILES string

OCC(CO)(CO)NCCS(O)(=O)=O

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)

InChI key

JOCBASBOOFNAJA-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Application

TES is a physiological Good′s buffer (pH 74.-7.9) used in biological research applications. It is often compared to other Good′s buffers for chemistry and optimal performance in a given system.

Other Notes

Hydrogen ion buffer for biological research; Suitable buffer for epidermal cell growth at pH 7.4-7.9 where additional buffering capacity is required

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCBZ5635
BCBR5343V
BCBQ6911V
BCBL5643V
BCBG9557V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

H. Hammar et al.
Epidermis Dis., Proc. Eur. Soc. Dermatol. Res. Symp. 1979, 243-243 (1981)
M J Taylor et al.
The British journal of ophthalmology, 73(10), 792-802 (1989-10-01)
Periods of preservation for donor corneas, even for short times, are necessary to facilitate optimum conditions in penetrating keratoplasty. However, current techniques for corneal storage at low temperatures may not provide optimal conditions for maintaining tissue integrity. In particular, the
J L Paquet et al.
British journal of pharmacology, 126(5), 1083-1090 (1999-04-16)
1. The present study addresses the differences in binding profiles and functional properties of the human and rat bradykinin (BK) B2 receptor using various kinin receptor peptide derivatives as well as the non-peptide receptor antagonists WIN 64338 (phosphonium, [[4-[[2-[[bis(cyclohexylamino)methylene]amino]-3-(2-naphtalenyl)1- oxopropyl]amino]-phenyl]-methyl]tributyl
G S Prins et al.
Fertility and sterility, 46(1), 147-149 (1986-07-01)
Several cryoprotective media currently in use for human sperm cryopreservation have been directly compared with each other by use of a static vapor freezing technique. The TEST-citrate-yolk buffers with glycerol resulted in the highest motility and longevity after thawing; thus
U Kragh-Hansen et al.
Clinical chemistry, 39(2), 202-208 (1993-02-01)
We examined the suitability of nine organic buffers for studying calcium binding to albumin by equilibrium dialysis. Results obtained with defatted human serum albumin showed that 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) and 2-([tris(hydroxymethyl)methyl] amino)ethanesulfonic acid were superior. Scatchard analysis of the experimental
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service