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C8210

CHES

Name: CHES
Brand: SIGMA

BioXtra, ≥99.0% (titration)

Synonym(s):

2-(Cyclohexylamino)ethanesulfonic acid

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About This Item

Empirical Formula (Hill Notation):

C₈H₁₇NO₃S

CAS Number:

103-47-9

Molecular Weight:

207.29

UNSPSC Code:

12161700

NACRES:

NA.25

PubChem Substance ID:

24893031

EC Number:

203-115-6

Beilstein/REAXYS Number:

2967601

MDL number:

MFCD00003835

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Properties

product line

BioXtra

Quality Segment

200

assay

≥99.0% (titration)

form

powder

impurities

≤0.0005% Phosphorus (P), ≤0.1% Insoluble matter

ign. residue

≤0.1%

pH

3.0-5.0 (0.5 M in H₂O)

useful pH range

8.6-10.0

pKa (25 °C)

9.3

solubility

H₂O: 0.5 M, clear, colorless

anion traces

chloride (Cl^-): ≤0.05%, sulfate (SO₄^2-): ≤0.05%

cation traces

Al: ≤0.0005%, Ca: ≤0.001%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.005%, Mg: ≤0.0005%, NH₄⁺: ≤0.05%, Na: ≤0.01%, Pb: ≤0.001%, Zn: ≤0.0005%

absorption

≤0.05 at 280 in H₂O at 0.5 M, ≤0.08 at 260 in H₂O at 0.5 M

application(s)

diagnostic assay manufacturing

SMILES string

OS(=O)(=O)CCNC1CCCCC1

InChI

1S/C8H17NO3S/c10-13(11,12)7-6-9-8-4-2-1-3-5-8/h8-9H,1-7H2,(H,10,11,12)

InChI key

MKWKNSIESPFAQN-UHFFFAOYSA-N

Description

General description

CHES (2-(Cyclohexylamino) ethane sulfonic acid) is a derivative of amino acid taurine. It serves as a standard physiological buffer in the pH range of 8.5-9.5.

Application

CHES may be used:

for pH adjustments and as a assay buffer in catechol oxidase activity measurements(32)
as a buffer in electron paramagnetic resonance (EPR) spectroscopy and kinetic measurements(33)
as a buffer for soil solution equivalent (SSE) yeast dextrose medium for screening pH optima for growth of Aridibacter nitratireducens A24_SHP-5_238^T(34)

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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c