Magnesium sulfate monohydrate CAS 14168-73-1
| CAS No. | 14168-73-1 |
| Molecular Formula | O4S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Magnesium sulfate monohydrate (CAS 14168-73-1), molecular formula O4SMgH2O and molecular weight 138.38 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Magnesium sulfate monohydrate (O4SMgH2O) is characterized by a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | O4S Mg H2O |
| Molecular Weight | 138.38 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1961 |
| Sulfur Atoms | 1 |
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