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375368

HEPES

Name: HEPES
Brand: MM

≥99% dry basis (titration), 1M solution, amniosulfonic acid buffer

Synonym(s):

HEPES, 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid)

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About This Item

Empirical Formula (Hill Notation):

C₈H₁₈N₂O₄S

CAS Number:

7365-45-9

Molecular Weight:

238.30

UNSPSC Code:

12161700

NACRES:

NA.25

MDL number:

MFCD00006158

Beilstein/REAXYS Number:

883043

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Properties

Product Name

HEPES, ULTROL^® Grade, ≥99% dry basis (titration), 1M zwitterionic N-substituted aminosulfonic acid buffer

Quality Level

100

description

Merck USA index - 144654

assay

≥99% dry basis (titration)

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

Description

General description

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

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

Disclaimer

Toxicity: Standard Handling (A)

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Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c