HEPES (Acide 4-(2-hydroxyéthyl)pipérazine-1-yléthanesulfonique) ≥99% (base substance sèche), en poudre, Ultrapure
Supplier: Thermo Fisher Scientific
Certificates
About this item
CAS Number:7365-45-9
:
Formula:C₈H₁₈N₂O₄S
MDL Number:MFCD00006158
Merck Index:14,04654
Melting Pt:∼ 236 °C (déc.)
Density:1,448 g/cm³ (20 °C)
:238.31 g/mol
Storage Temperature:Température ambiante
EINECS:230-907-9
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
Specification Test Results
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