| CAS No. | 1345-25-1 |
| Molecular Formula | FeO |
| Molecular Weight | 71.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Iron(II) oxide (CAS 1345-25-1) is a high-purity analytical reference standard with the molecular formula FeO and a molecular weight of 71.84 g/mol.
Based on its molecular formula FeO, Iron(II) oxide contains an inorganic composition; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 71.84 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
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 | FeO |
| Molecular Weight | 71.84 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Freely soluble in water |
| Stability | Stable under recommended storage conditions |
| CAS Registry Year (est.) | 1957 |