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2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid sodium salt

pKa (20 °C)7.55, ≥99% dry basis (perchloric acid titration)

Synonym(s):

2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid sodium salt

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About This Item

Empirical Formula (Hill Notation):
C8H17N2NaO4S
CAS Number:
75277-39-3
Molecular Weight:
260.29
UNSPSC Code:
12161703
EC Index Number:
278-169-7

Assay

≥99% dry basis (perchloric acid titration)

form

solid

pKa (20 °C)

7.55

storage temp.

2-30°C

InChI

1S/C8H18N2O4S.Na/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14;/h11H,1-8H2,(H,12,13,14);/q;+1/p-1

InChI key

RDZTWEVXRGYCFV-UHFFFAOYSA-M

General description

buffer substance HEPES-Na

Analysis Note

Assay (perchloric acid titration, calculated on dried substance): ≥ 99
Identity (IR-spectrum): passes test
UV-Absorption (250 nm, 20 g/l, 1 cm, water): ≤ 0.06
Chloride (Cl): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Loss on Drying (105 °C): ≤ 6.0
Biological buffer, pKa at 20 °C: 7.55

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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