| CAS No. | 78798-95-5 |
| Molecular Formula | 3*O3W |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
The occurrence of Tungsten trioxide hydrate (3:1) is closely related to an inorganic composition in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Tungsten trioxide hydrate (3:1) (CAS 78798-95-5), a certified reference material (molecular formula O3WH2O, MW 249.85 g/mol) for analytical method development and quality control.
The molecular framework of Tungsten trioxide hydrate (3:1) (O3WH2O) is characterized by an inorganic composition. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.
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.
CATO manufactures Tungsten trioxide hydrate (3:1) 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.
| Molecular Formula | 3*O3W H2O |
| Molecular Weight | 249.85 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.) | 1979 |