| CAS No. | 13520-78-0 |
| Molecular Formula | Cl4OW |
| Molecular Weight | 341.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of Oxotungsten(VI) chloride is closely related to chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Oxotungsten(VI) chloride (CAS 13520-78-0) is a high-purity analytical reference standard with the molecular formula Cl4OW and a molecular weight of 341.65 g/mol.
Oxotungsten(VI) chloride (Cl4OW) contains chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | Cl4OW |
| Molecular Weight | 341.65 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 |
| Halogen Content | Cl-containing |