Calcium tungstate is a luminescent compound and one of the most important luminophores. It is also used in the manufacture of fluorescent paint and coatings. It is also used in X-ray devices.
This calcium tungstate is often referred to as scheelite. It is a mineral that contains CaWO4. The main raw material in the production of tungsten is scheelite. Scheelite is a highly sought after mineral. Known for its beauty, it has been fashioned into gemstones.
The crystalline structure of scheelite is characterized by a body-centred tetragonal system. A two-dimensional electron diagram of scheelite shows that the tungsten atoms coordinate with four oxygen atoms in WO4 tetrahedrons.
Scheelite has a chemical formula of CaWO4. The scheelite molecule has a structure that makes it a good lasing medium. It is also used as a scintillator.
It is also a very good catalyst for large-scale oxidation of organic substrates with hydrogen peroxide. During the oxidation process, the tungsten particles remain intact. For large-scale applications, calcium tungstate is a very environmentally friendly material because it produces minimal waste.
Calcium tungstate can be obtained in a range of purity levels. Some of these include high-purity nanocrystalline, submicron, and nanopowder forms. Among these is an ultrafine form that is useful in imaging devices.
Calcium tungstate is also used as a contrast agent in x-ray imaging. In fact, it is used in the transfer film in many x-ray devices. Generally, the calcium tungstate is available immediately.