Promethium (III) iodide
General | |||||||
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Surname | Promethium (III) iodide | ||||||
other names |
Promethium triiodide |
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Molecular formula | PmI 3 | ||||||
Brief description |
red solid |
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External identifiers / databases | |||||||
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properties | |||||||
Molar mass | 527.71 g mol −1 ( 147 μm) | ||||||
Physical state |
firmly |
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Melting point |
695 ° C |
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Hazard and safety information | |||||||
Radioactive |
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Promethium (III) iodide is a chemical compound made up of the elements promethium and iodine . It has the formula PmI 3 and belongs to the iodide class of substances .
Appearance and properties
Promethium (III) iodide cannot be prepared from promethium (III) oxide (Pm 2 O 3 ) by reaction with HI - H 2 mixtures; instead, promethium (III) oxyiodide (PmOI) is formed. The desired product is formed by reaction of Pm 2 O 3 with molten aluminum iodide (AlI 3 ) at 500 ° C. It is a red solid with a melting point of 695 ° C.
safety instructions
Classifications according to the CLP regulation are not available because these only include chemical hazard and play a completely subordinate role compared to the hazards based on radioactivity . The latter also only applies if the amount of substance involved is relevant.
literature
- Fritz Weigel: The chemistry of promethium , in: Fortschr. Chem. Forsch. , 1969 , 12 (4), pp. 539-621 ( doi : 10.1007 / BFb0051097 ).
- James E. Huheey: Inorganische Chemie , 1st edition, de Gruyter, Berlin 1988, ISBN 3-11-008163-6 , pp. 873-900.
Individual evidence
- ^ A b c A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 102nd edition. Walter de Gruyter, Berlin 2007, ISBN 978-3-11-017770-1 , p. 1942.
- ↑ The hazards emanating from radioactivity do not belong to the properties to be classified according to the GHS labeling. With regard to other hazards, this substance has either not yet been classified or a reliable and citable source has not yet been found.
- ↑ Weigel: Die Chemie des Promethiums , p. 591.
- ↑ Gmelin's Handbook of Inorganic Chemistry , System No. 39, Part C 6, p. 192.