xcellent Optical Performance: Serves as an effective laser host material for a wide range of electronic and optical applications.
Unique Scheelite Crystal Structure: The stable scheelite structure provides reliable physical and chemical properties.
Luminescent Properties: Exhibits strong luminescence, suitable for optical and sensing technologies.
Thermoluminescent Capability: Demonstrates thermoluminescence, making it useful in radiation detection and measurement applications.
Calcium Tungstate CAS#7790-75-2
Calcium Tungstate (CaWO₄) is an optical material widely used as a laser host for various electronic applications. It features a scheelite crystal structure and exhibits luminescent as well as thermoluminescent properties.
Calcium tungstate Chemical Properties
| Melting point | 1620°C |
| density | 6.06 g/mL at 25 °C (lit.) |
| storage temp. | -20°C |
| solubility | Insoluble in H{2}O. Decomposes by hot HCl, HNO{3} |
| form | Powder |
| color | white |
| Specific Gravity | 6.062 |
| biological source | rabbit |
| Water Solubility | insoluble H2O; decomposed by hot HCl, HNO3 [MER06] |
| Merck | 141,712 |
| Solubility Product Constant (Ksp) | pKsp: 8.06 |
| Exposure limits | ACGIH: TWA 3 mg/m3 |
| NIOSH: TWA 5 mg/m3; STEL 10 mg/m3 | |
| InChI | 1S/Ca.4O.W/q+2;;;2*-1; |
| InChIKey | FDMFQOCGNBYKPY-UHFFFAOYSA-N |
| SMILES | [Ca++].[O-][W]([O-])(=O)=O |
| CAS DataBase Reference | 7790-75-2(CAS DataBase Reference) |
| EPA Substance Registry System | Calcium tungsten oxide (CaWO4) (7790-75-2) |
Safety Information
| WGK Germany | 3 |
| TSCA | TSCA listed |
| HS Code | 28418030 |
| Storage Class | 11 - Combustible Solids |
Product Application of Calcium Tungstate CAS#7790-75-2
Calcium Tungstate is widely recognized as a phosphor material that emits light in the 310–700 nm range when excited by wavelengths between 220–300 nm. Its emission peak at 440 nm produces a distinct blue light, making it suitable for optical and luminescent applications.
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