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H9897

Sigma-Aldrich

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

form

dry powder

pH

7.0-8.0

useful pH range

6.8-8.2

pKa 

7.5

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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Related Categories

Packaging

foil pouches

Reconstitution

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 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’.

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