HEPES SigmaUltra pH 5.0-6.5 (20 °C 1 M in H2O) ≥99.5% (titration)
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Specifications
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| Molecular Formula | C8H18N2O4S |
| Molecular Weight | 238.30 |
| CAS Number | 7365-45-9 |
| assay | ≥99.5% (titration) |
| total impurities Insoluble matter | passes filter test |
| ign. residue (900°C) | ≤0.1% (as SO4) |
| loss | ≤1.0% loss on drying 110°C |
| pH | 5.0-6.5 (20 °C 1 M in H2O) |
| useful pH range | 6.8 - 8.2 |
| pKa | (25 °C) 7.5 |
| solubility H2O | 1 M at 20 °C clear colorless |
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