HEPES Buffer 99%
Good zwitteruonic buffer substance suitable for tissue culture work pka - 7.5, Useful pH range 6.8 - 8.2
4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid; N-(2-Hydroxyethyl)piperazine-N'-(2-ethanesulfonic acid)
Product Code. |
01331 |
Grade |
|
Purity |
99% |
CAS No. |
7365-45-9 |
Molecular Formula |
C8H18N2O4S |
Molecular Weight |
238.30 |
H.S.Code |
2933.59900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White powder |
pH value |
5.0 - 6.5 at 238 g/l at 25 °C |
| Melting point/ Freezing point [°C] |
234 °C |
Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | White powder |
| Assay | Min 99% |
| Chloride (Cl) | Max 0.005% |
| Sulphate (SO4) | Max 0.005% |
| Heavy metal (as Pb) | Max 0.0005% |
| Sodium (Na) | Max 0.01% |
| Loss on drying (at 105°C) | Max 1.0% |
Safety Information and Hazard Symbols