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Cadmium Oxide (CdO)-Granules

  • CdO
  • 99.99%
  • 480800GN
  • 1 mm - 4 mm
  • Class 6.1
  • 215-146-2
  • UN2570
  • 1306-19-0
  • PG III

Characteristic


Cadmium oxide is an inorganic compound with the formula CdO. It is one of the main precursors to other cadmium compounds. It crystallizes in a cubic rocksalt lattice like sodium chloride, with octahedral cation and anion centers. It occurs naturally as the rare mineral monteponite. Cadmium oxide can be found as a colorless amorphous powder or as brown or red crystals. Cadmium oxide is an n-type semiconductor with a band gap of 2.18 eV (2.31 eV) at room temperature (298 K).


Chemical formula:CdO

Molar mass:128.413 g·mol−1

Appearance:colorless powder (alpha form)

                       red-brown crystal (beta form)

Odor:odorless

Density:8.15 g/cm3(crystalline),

                6.95 g/cm3 (amorphous) solid.

Melting point:900–1,000 °C (1,650–1,830 °F; 1,170–1,270 K)

                          decomposition of amorphous form

Boiling point:1,559 °C (2,838 °F; 1,832 K) sublimation

Solubility in water:4.8 mg/L (18 °C)

Solubility:soluble in dilute acid

                   slowly soluble in ammonium salts

                   insoluble in alkalies

Crystal structure: cubic, cF8



Application


Cadmium oxide is used in cadmium plating baths, electrodes for storage batteries, cadmium salts, catalyst, ceramic glazes, phosphors, and nematocide. Major uses for cadmium oxide are as an ingredient for electroplating baths, and in pigments.



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