Tungsten(IV) oxide CAS 12036-22-5
| CAS No. | 12036-22-5 |
| Molecular Formula | O2W |
| Molecular Weight | 215.84 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Tungsten(IV) oxide (CAS 12036-22-5) is a high-purity analytical reference standard with the molecular formula O2W and a molecular weight of 215.84 g/mol.
Structurally, Tungsten(IV) oxide (O2W) contains an inorganic composition. The molecule exhibits a degree of unsaturation (DBE) of 0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 215.84 g/mol, it falls into the medium-molecular-weight range.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | O2W |
| Molecular Weight | 215.84 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Freely soluble in water |
| Stability | Stable under recommended storage conditions |
| CAS Registry Year (est.) | 1960 |
Related Tungsten Standards
- Tungsten(IV) oxide (99.9+%-W) (WO2.9 Blue Sub-oxide) (CAS 12037-58-0)
- Tungsten(VI) oxide (CAS 1314-35-8)
- Tungsten carbide (CAS 12070-12-1)
- Tungsten boride (WB) (CAS 12007-09-9)
- 14265-83-9 Tungsten, isotope of mass 186 Tungsten-186 186W (CAS 14265-83-9)
- 14265-82-8 Tungsten, isotope of mass 184 Tungsten-184 184W (CAS 14265-82-8)
- Tungsten(IV) Sulfide (CAS 12138-09-9)
- 14265-80-6 Tungsten, isotope of mass 182 Tungsten-182 182W (CAS 14265-80-6)
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