Iron Oxide Pigment Black CAS 120899-48-1
| CAS No. | 120899-48-1 |
| Molecular Formula | Fe2O3 |
| 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.
Iron Oxide Pigment Black (CAS 120899-48-1) is a high-purity analytical reference standard with the molecular formula Fe2O3FeO and a molecular weight of 231.53 g/mol.
Iron Oxide Pigment Black (Fe2O3FeO) contains an inorganic composition. It is notably hygroscopic; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
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 | Fe2O3 FeO |
| Molecular Weight | 231.53 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Freely soluble in water |
| Stability | Hygroscopic; reseal immediately after opening |
| CAS Registry Year (est.) | 1991 |
Related Iron Standards
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- Iron(II) phosphate (CAS 10028-23-6)
- Iron(II) succinate (CAS 10030-90-7)
- Iron(III) bromide (CAS 10031-26-2)
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- Iron(III) pyrophosphate (CAS 10058-44-3)
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