HEPES (2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulphonic acid) ≥99% (dry basis), powder, Ultrapure

Supplier: Thermo Scientific

Synonyms: HEPES free acid, N-(2-Hydroxyethyl)piperazine-N′-(2-ethanesulphonic acid), 4-(2-Hydroxyethyl)piperazin-1-ylethanesulphonic acid, N-2-Hydroxyethylpiperazine-N′-2-ethanesulphonic acid, 2-(4-(2-Hydroxyethyl)piperazin-1-yl)ethanesulphonic acid

J16926.A1 J16926.22 J16926.A7
ALFAJ16926.A1EA 1790 SGD
ALFAJ16926.A1 ALFAJ16926.22 ALFAJ16926.A7
HEPES (2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulphonic acid) ≥99% (dry basis), powder, Ultrapure
HEPES (4-(2-Hydroxyethyl)piperazin-1-ylethanesulphonic acid)
Formula: C₈H₁₈N₂O₄S
MW: 238,31 g/mol
Melting Pt: ∼ 236 °C (dec.)
Density: 1,448 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00006158
CAS Number: 7365-45-9
EINECS: 230-907-9
Merck Index: 14,04654
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Specification Test Results

Assay (Unspecified) ≥99.0% (Dry Basis)
Identification (FTIR) Conforms
pKa (20 °C) 7.55 ±0.15
A (250 nm, 1 M, 1 cm) ≤0.2
Loss on Drying ≤0.5%
Residue on Ignition ≤0.1%
Chloride (Cl) ≤0.005%
Phosphate (PO₄) ≤0.001%
Sulphate (SO₄) ≤0.01%
Iron (Fe) ≤5 ppm
Heavy Metals (Pb) ≤10 ppm
Assay (Unspecified) Absorbance (250 nm, 1 M, 1 cm) ≤0.2

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