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Key Documents

H7637

Sigma-Aldrich

HEPES hemisodium salt

≥99% (titration)

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:
Molecular Weight:
249.30
MDL number:
UNSPSC Code:
12161700
PubChem Substance ID:
NACRES:
NA.25

Quality Level

assay

≥99% (titration)

form

powder

pH

7.4-7.7 (25 °C, 0.1 M in water)

useful pH range

6.8-8.2

pKa 

7.5

solubility

water: soluble 0.5 g/mL

application(s)

diagnostic assay manufacturing

storage temp.

room temp

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

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Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Certificates of Analysis (COA)

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