HEPES

Reference: HEP-112C

HEPES

(2-[4-(2-Hydroxyethyl)-1-piperazinyl] ethanesulfonic acid C₈H₁₈N₂O₄S

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DESCRIPTION

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CAS # 7365-45-9
Form: White crystalline powder
Formula: C₈H₁₈N₂O₄S
Formula weight: 238.30
Assay: > 99 %
Solubility (1M, H2O): Clear solution
pKa (20 °C): 7.35 - 7.69
Loss on drying (104°C, 4h): < 0.5 %
Residue on ignition: < 0.1 %
pH (1%, H₂O): 4.8 - 5.6
A₂₆₀ (1M, H₂O): < 0.05
A₂₈₀ (1M, H₂O): < 0.05
Heavy metals (as Pb): < 5ppm
Fe: < 5 ppm
Storage: Room temperature. Protect from moisture and light.
Stability: Stable at least 2 years at RT.

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