Name: HEPES potassium salt
Brand: SIGMA

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About This Item

Empirical Formula (Hill Notation):

C₈H₁₇KN₂O₄S

CAS Number:

82207-62-3

Molecular Weight:

276.39

MDL number:

MFCD00043438

UNSPSC Code:

12161700

PubChem Substance ID:

24895405

NACRES:

NA.25

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Quality Level

200

Assay

≥99.5% (titration)

form

powder

useful pH range

6.8-8.2

pKa

7.5

solubility

water: 0.5 g/mL, clear, colorless

SMILES string

[K+].OCCN1CCN(CC1)CCS([O-])(=O)=O

InChI

1S/C8H18N2O4S.K/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

KWURIFKZTJGMFD-UHFFFAOYSA-M

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General description

HEPES (4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid) is a widely used Good’s buffer in biochemical and biological research applications. As a zwitterionic buffer, it stabilizes the pH of the solution even when small amounts of acid or base are added.

Application

HEPES potassium salt has been used as a buffering agent in nanopore fabrication and electrolyte preparations. It has also been used as a component of cell lysis buffer.

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

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