| CAS No. | 13446-23-6 |
| Molecular Formula | 2*O4P |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Magnesium phosphate tribasic octahydrate purum p.a., ≥97.0% (KT) (CAS 13446-23-6), molecular formula O4PMgH2O and molecular weight 137.29 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Magnesium phosphate tribasic octahydrate purum p.a., ≥97.0% (KT) (O4PMgH2O) is characterized by a phosphate ester 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.
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.
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.
| Molecular Formula | 2*O4P 3*Mg 8*H2O |
| Molecular Weight | 137.29 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.) | 1960 |