Categories
  Encyclosphere.org ENCYCLOREADER
  supported by EncyclosphereKSF

Cadmium permanganate

From Wikipedia - Reading time: 5 min

cadmium permanganate
Identifiers
3D model (JSmol)
  • InChI=1S/Cd.2Mn.8O/q+2;;;;;;;;;2*-1
    Key: ZACBZJVABWSYQB-UHFFFAOYSA-N
  • [Cd+2].O=[Mn](=O)(=O)[O-].O=[Mn](=O)(=O)[O-]
Properties
Cd(MnO4)2
Molar mass 350.28
Appearance dark purple crystals[1]
soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Cadmium permanganate is an inorganic compound with the chemical formula Cd(MnO4)2. It can form the hexahydrate Cd(MnO4)2·6H2O.

Preparation

[edit]

Cadmium permanganate can be obtained by reacting cadmium sulfate and barium permanganate. After removing the barium sulfate precipitate, the solution is crystallized in the dark:[1]

Ba(MnO4)2 + CdSO4 → Cd(MnO4)2 + BaSO4↓

Cadmium permanganate can also be produced by reacting manganese heptoxide with cadmium oxide[2] or cadmium hydroxide.[3]

Properties

[edit]

Cadmium permanganate hexahydrate loses water of crystallisation at 61~62 °C, and anhydrate can be obtained at a constant temperature of 90 °C. The anhydrous form begins to decompose at 108 °C:[3]

Cd(MnO4)2 → CdMnO3 + MnO2 + 3/2 O2↑

References

[edit]
  1. ^ a b Kótai, László; Banerji, Kalyan K. (2001-03-31). "An Improved Method for the Preparation of High-Purity Permanganate Salts". Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 31 (3): 491–495. doi:10.1081/SIM-100002234. ISSN 0094-5714. Archived from the original on 2021-02-20. Retrieved 2020-06-21.
  2. ^ Kótai, László; Sajó, István E.; Gács, István; Sharma, Pradeep K.; Banerji, Kalyan K. (Jul 2007). "Convenient Routes for the Preparation of Barium Permanganate and other Permanganate Salts". Zeitschrift für anorganische und allgemeine Chemie (in German). 633 (8): 1257–1260. doi:10.1002/zaac.200700142. Retrieved 2020-06-21.
  3. ^ a b Zhang, Zhongsheng; Wu, Jigui; Zhang, Yanni (1991-07-02). "Research on Kinetic Parameters of Cadmium Permanganate by Thermogravimetry". Journal of Lanzhou University (Natural Science) (in Chinese). 27 (2). doi:10.13885/j.issn.0455-2059.1991.02.019.
Licensed under CC BY-SA 3.0 | Source: https://en.wikipedia.org/wiki/Cadmium_permanganate
14 views | Status: cached on June 14 2025 19:43:27
↧ Download as ZWI file
Encyclosphere.org EncycloReader is supported by the EncyclosphereKSF