1.15228

Millipore

N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid

pKa (20 °C)7.15, ≥99% (alkalimetric)

Synonym(s):
BES, N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid
Empirical Formula (Hill Notation):
C6H15NO5S
CAS Number:
Molecular Weight:
213.25
MDL number:
EC Index Number:
233-465-5

storage conditions

Store at +5°C to +30°C.

Quality Level

assay

≥99% (alkalimetric)

pKa (20 °C)

7.15

storage temp.

2-30°C

InChI

1S/C6H15NO5S/c8-4-1-7(2-5-9)3-6-13(10,11)12/h8-9H,1-6H2,(H,10,11,12)

InChI key

AJTVSSFTXWNIRG-UHFFFAOYSA-N

General description

buffer substance BES

Analysis Note

Assay (alkalimetric): ≥ 99 %
Identity (IR-spectrum): passes test
UV-Absorption (250 nm, 50 g/l, 1 cm, water): ≤ 0.05
Chloride (Cl): ≤ 0.005 %
Sulphate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Loss on Drying (105°C): ≤ 0.5 %
Biological buffer, pKa at 20 °C: 7.15

Certificate of Analysis

Certificate of Origin

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