Skip to Content
Merck
All Photos(3)

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

Sign Into View Organizational & Contract Pricing


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

Looking for similar products? Visit Product Comparison Guide

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service