Tungsten(IV) Sulfide CAS 12138-09-9
| CAS No. | 12138-09-9 |
| Molecular Formula | S2W |
| Molecular Weight | 247.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Tungsten(IV) Sulfide (S2W) contains sulfur-containing functionality. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions.
Tungsten(IV) Sulfide (CAS 12138-09-9) is a high-purity analytical reference standard with the molecular formula S2W and a molecular weight of 247.97 g/mol.
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.
Physical & Chemical Properties
| Molecular Formula | S2W |
| Molecular Weight | 247.97 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 |
| Sulfur Atoms | 2 |
Related Tungsten Standards
- Tungsten(VI) oxide (CAS 1314-35-8)
- Tungsten(IV) oxide (CAS 12036-22-5)
- Tungsten(IV) oxide (99.9+%-W) (WO2.9 Blue Sub-oxide) (CAS 12037-58-0)
- Tungsten dichloride (CAS 13520-76-8)
- 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)
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