CAS: 7790-85-4
Molecular formula: CDWO4
Product code: 48740800Gn.
Purity: 99.95%
Size: 1mm – 4mm
EINECS No.: 232-226.2.
Dangerous goods level: Class 6.1
United Nations Hazardous Goods Code: UN2570
Package category: PG III.
Feature
Carbonone (CDWO)4 or CWO), the cadmium salt of tungstate, is a dense chemically inert solid that is used as a scintillation crystal to detect gamma rays. It has a density of 7.9 g/cm3 and a melting point of 1325°C.
Chemical formula: CDWO4
Molar mass: 360.25 g•mol-1
Appearance: Colorless crystals with a yellow hue
Density: 7.9 g/cm3, hard
Melting point: 1,325°C (2,417°F; 1,598k)
Solubility in water: 0.04642g/100ml (20°C)
Application
It is commonly used in computed tomography. Combining scintillator crystals with externally applied borocarbides allows the construction of compact sub-detectors for gamma-ray and neutron radiation.
Cadmium tungstate has been used as a replacement for calcium tungstate in some fluoroscopes since the 1940s. The very high radioactivity allows the use of this scintillator as a detector of rare nuclear processes (double beta decay, other rare alpha and beta decays) in low background applications.
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