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Merck

H9897

HEPES hemisodium salt

dry powder

Synonym(s):

4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid hemisodium salt, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid) hemisodium salt

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About This Item

Empirical Formula (Hill Notation):
C8H17.5N2O4S· 0.5Na
CAS Number:
103404-87-1
Molecular Weight:
249.30
UNSPSC Code:
12161700
PubChem Substance ID:
24895874
NACRES:
NA.25

Product Name

HEPES hemisodium salt, dry powder

SMILES string

[Na+].OCCN1CCN(CC1)CCS([O-])(=O)=O

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

form

dry powder

pH

7.0-8.0

useful pH range

6.8-8.2

pKa 

7.5

storage temp.

room temp

Quality Level

200

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Packaging

foil pouches

Preparation Note

Contents of each pouch dissolved in 1 liter deionized water will yield 0.1 M sodium HEPES buffer, pH 7.5 at 25 °C.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000447866
0000447866
0000401719
0000401719
0000370145

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