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HEPES 2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulphonic acid ≥99.5% for biochemistry

Supplier: VWR Chemicals

Formula: C₈H₁₈N₂O₄S
MW: 238,31 g/mol
Melting Pt: 210-215 °C
Density: 1,448 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00006158
CAS Number: 7365-45-9
EINECS: 230-907-9
UN: 0000
Merck Index: 13,04672
Specification Test Results
Assay Min. 99.5 %
Appearance White powder
Appearance of solution (1 mol/l) Clear colourless liquid
IR Spectrum Passes test
pH (1 %) 4.7 - 5.3
Ignition residue Max. 0.1 %
Water Max. 0.5 %
Cl (Chloride) Max. 50 ppm
PO4 (Phosphate) Max. 10 ppm
SO4 (Sulphate) Max. 100 ppm
Al (Aluminium) Max. 5 ppm
Cu (Copper) Max. 5 ppm
Fe (Iron) Max. 5 ppm
Na (Sodium) Max. 0.1 %
Pb (Lead) Max. 5 ppm
Absorbance (260 nm) (1 mol/l) Max. 0.05
Absorbance (280 nm) (1 mol/l) Max. 0.04



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Pack type Pk VWR Catalog Number Quantity
Plastic bottle for solids 250 g 441485H
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Plastic bottle for solids 1 kg 441487M
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Bucket (Plastic) 5 kg 44148BC
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