M5287
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M5287
Sigma
MES hydrate
≥99.5% (titration), pH 2.5-4.0 (20 °C, 0.5 M in H2O), SigmaUltra
| Synonym: | 2-(N-Morpholino)ethanesulfonic acid hydrate, 4-Morpholineethanesulfonic acid |
| CAS Number: | 4432-31-9 (anhydrous) |
| Linear Formula: | C6H13NO4S · xH2O |
| Molecular Weight: | 195.24 (anhydrous basis) |
| MDL number: | MFCD00149409 |
Description
| Other Notes | Easily compare specifications for MES products with the MES specification table. |
Properties
| grade | SigmaUltra |
| assay | ≥99.5% (titration) |
| total impurities | Insoluble matter, passes filter test |
| ign. residue (900°C) | <0.05% |
| pH | 2.5-4.0 (20 °C, 0.5 M in H2O) |
| useful pH range | 5.5 - 6.7 |
| pKa | 6.1 |
| EQP level | Elite |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| anion traces | chloride (Cl-): ≤0.005% |
| cation traces | Al: ≤0.0005% |
| As: ≤0.0001% | |
| Ba: ≤0.0005% | |
| Bi: ≤0.0005% | |
| Ca: ≤0.002% | |
| Cd: ≤0.0005% | |
| Co: ≤0.0005% | |
| Cr: ≤0.0005% | |
| Cu: ≤0.0005% | |
| Fe: ≤0.0005% | |
| K: ≤0.005% | |
| Li: ≤0.0005% | |
| Mg: ≤0.0005% | |
| Mn: ≤0.0005% | |
| Mo: ≤0.0005% | |
| Na: ≤0.005% | |
| Ni: ≤0.0005% | |
| Pb: ≤0.0005% | |
| Sr: ≤0.0005% | |
| Zn: ≤0.0005% | |
| abs. | A |
| A |
Safety
| Personal Protective Equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
| Safety Statements | 22-24/25 |
| WGK Germany | 3 |
References
| Merck | Merck 13,5929 |
