Tungsten(IV) oxide (99.9+%-W) (WO2.9 Blue Sub-oxide) CAS 12037-58-0
| CAS No. | 12037-58-0 |
| Molecular Formula | O2W |
| Molecular Weight | 215.84 g/mol |
| 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.
Tungsten(IV) oxide (99.9+%-W) (WO2.9 Blue Sub-oxide) (CAS 12037-58-0) is a high-purity analytical reference standard with the molecular formula O2W and a molecular weight of 215.84 g/mol.
Owing to an inorganic composition, Tungsten(IV) oxide (99.9+%-W) (WO2.9 Blue Sub-oxide) is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 215.84 g/mol — guide the selection of appropriate sample preparation and analytical techniques.
CATO manufactures Tungsten(IV) oxide (99.9+%-W) (WO2.9 Blue Sub-oxide) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring 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 (CAS 12036-22-5)
- 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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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com