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H0527
HEPES potassium salt
≥99.5% (titration)
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
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| Size/SKU | Availability | Price |
|---|---|---|
100 g | Check Cart for Availability | $213.00 |
250 g | Available to ship TODAYfromMILWAUKEE | $426.00 |
About This Item
Empirical Formula (Hill Notation):
C8H17KN2O4S
CAS Number:
Molecular Weight:
276.39
NACRES:
NA.25
PubChem Substance ID:
UNSPSC Code:
12161700
MDL number:
Quality Segment
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
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.
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This Item | |||
|---|---|---|---|
| description ≥99.5% (titration) | description dry powder | description BioPerformance Certified, suitable for cell culture, ≥99.0% | description BioUltra, Molecular Biology, ≥99.5% (T) |
| assay ≥99.5% (titration) | assay - | assay ≥99.0% | assay ≥99.5% (T) |
| Quality Level 200 | Quality Level 200 | Quality Level 400 | Quality Level 200 |
| form powder | form dry powder | form powder | form powder |
| solubility water: 0.5 g/mL, clear, colorless | solubility - | solubility water: 0.1 M, clear, colorless | solubility H2O: 1 M at 20 °C, clear, colorless |
| useful pH range 6.8-8.2 | useful pH range 6.8-8.2 | useful pH range 6.8-8.2 | useful pH range 6.8-8.2 |
| pKa 7.5 | pKa 7.5 | pKa - | pKa - |
Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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