HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid ≥99.5% (by titrimetric analysis on dry substance), white powder

00174-10KG 00174-1KG 00174-250G 00174-25G
CH00174-10KGEA 2297.29 CAD
CH00174-10KG CH00174-1KG CH00174-250G CH00174-25G
HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid ≥99.5% (by titrimetric analysis on dry substance), white powder
HEPES (4-(2-Hydroxyethyl)piperazin-1-ylethanesulphonic acid)

HEPES is used as a hydrogen ion buffer, which can control the constant pH range for long term.


  • Non-toxic to cell

Formula: C₈H₁₈N₂O₄S
MDL Number: MFCD00006158
CAS Number: 7365-45-9
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Specification Test Results

Appearance White powder
Solubility (0.1M in Water) Clear and complete
pH (5% Solution in H2O) 5.0 - 6.5
pKa (25 °C) 7.35 - 7.75
Loss on Drying ≤0.5%
Ash ≤0.3%
Assay by titration (dry basis) ≥99.5%


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