All Photos(4)
Synonym(s):
Piperazineethanesulfonic acid, 4-(2-hydroxyethyl)-monopotassium salt, 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid potassium salt, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulfonic acid) potassium salt
Empirical Formula (Hill Notation):
C8H17KN2O4S
CAS Number:
Molecular Weight:
276.39
MDL number:
UNSPSC Code:
12161700
PubChem Substance ID:
NACRES:
NA.25
Recommended Products
Quality Level
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.
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)
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