Merck
All Photos(1)

5310-OP

Millipore

OmniPur® HEPES, Free Acid

HEPES free acid, CAS 7365-45-9, is one of the most widely used Good's buffers.

Synonym(s):
N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid), N-2-Hydroxyethylpiperazine-N′-2-ethanesulfonic acid, 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid, HEPES
Empirical Formula (Hill Notation):
C8H18N2O4S
CAS Number:
Molecular Weight:
238.30
Beilstein:
883043
MDL number:
NACRES:
NA.21

Quality Level

form

fine powder

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

color

white

useful pH range

6.8-8.2

pKa (25 °C)

7.5

shipped in

ambient

storage temp.

10-30°C

SMILES string

OCCN1CCN(CC1)CCS(O)(=O)=O

InChI

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

Inchi Key

JKMHFZQWWAIEOD-UHFFFAOYSA-N

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General description



Molecular Biology grade

A260 (0.1 M, water): ≤0.05 AU
A280 (0.1 M, water): ≤0.05 AU
Assay (dried basis): ≥99
DNase: None detected
Heavy metals (as Pb): ≤0.001%
Phosphatase: None detected
pKa at 25°C: 6.80-8.20
Protease: None detected
RNase: None detected





Intended for laboratory and manufacturing use only. Not for drug, food, or household use.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
OMNIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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