Merck
All Photos(2)

375368

Millipore

HEPES, Free Acid, ULTROL® Grade, 1 M Solution

Synonym(s):
N-(2-Hydroxyethyl)piperazine-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:

assay

≥99% dry basis (titration)

Quality Level

form

solution

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

color

clear colorless

useful pH range

6.8-8.2

pKa (25 °C)

7.5

shipped in

ambient

storage temp.

15-25°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

General description

A zwitterionic N-substituted aminosulfonic acid buffer absorbance: <0.05 at 260 nm, 1 M, H2O; pKa: 7.55 at 20°C). Active in the pH range of 6.0 to 8.5.

Packaging

500 ml in Glass bottle
100 ml in Plastic ampoule

Warning

Toxicity: Standard Handling (A)

Physical form

1.0 M solution of Cat. No. 391338. Sterile-filtered.

Legal Information

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