Ammonium permanganate
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| General | ||||||||||
| Surname | Ammonium permanganate | |||||||||
| Molecular formula | NH 4 MnO 4 | |||||||||
| Brief description |
dark purple solid |
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| properties | ||||||||||
| Molar mass | 136.97 g mol −1 | |||||||||
| Physical state |
firmly |
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| density |
2.22 g cm −3 |
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| Melting point |
70 ° C (decomposition) |
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| solubility |
soluble in water (80 g l −1 at 15 ° C, 86 g l −1 at 25 ° C) |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||
Ammonium permanganate is an inorganic chemical compound of manganese from the group of permanganates .
Extraction and presentation
Ammonium permanganate can be obtained by reacting barium permanganate with ammonium sulfate .
properties
Ammonium permanganate is a dark purple solid that is soluble in water. It is sensitive to impact and slowly decomposes at room temperature. It has an orthorhombic crystal structure of the barite type with the space group Pnma (space group no. 62) and the lattice parameters a = 9.410 Å , b = 5.773 Å and c = 7.610 Å.
Individual evidence
- ↑ a b c d Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 1995, ISBN 0-8493-8671-3 , pp. 31 ( limited preview in Google Book search).
- ^ László Kótai, Piroska Szabó, Ágnes Keszler: Studies on the thermal behavior of ammonium permanganate. In: Thermochimica Acta. 338, 1999, p. 129, doi : 10.1016 / S0040-6031 (99) 00212-9 .
- ↑ Laszlo Kotai, Istvan Gacs, Istvan E. Sajo, Pradeep K. Sharma, Kalyan K. Banerji: ChemInform Abstract: Beliefs and Facts in Permanganate Chemistry - An Overview on the Synthesis and the Reactivity of Simple and Complex Permanganates. In: ChemInform. 42, 2011, S. no, doi : 10.1002 / chin.201113233 .
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ a b F. M. Chang, M. Jansen: Ammonium permanganate. In: Acta Crystallographica Section C Crystal Structure Communications. 41, p. 1693, doi: 10.1107 / S010827018500909X .