Chemistry:Ammonium pertechnetate
From HandWiki
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 Ammonium pertechnetate
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| IUPAC name
Ammonium pertechnetate
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
PubChem CID
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| Properties | |
| H4NO4Tc | |
| Molar mass | 180 g·mol−1 |
| Related compounds | |
Other anions
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Ammonium nitrate |
Other cations
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Sodium pertechnetate Potassium pertechnetate Calcium pertechnetate |
Related compounds
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Perchloric acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Ammonium pertechnetate is a chemical compound with the formula NH4TcO4. It is the ammonium salt of pertechnetic acid. The most common form uses 99Tc.[1] The compound is readily soluble in aqueous solutions forming ammonium and pertechnetate ions.
Synthesis
It can be synthesized by the reaction of pertechnetic acid and ammonium nitrate:
- HTcO4 + NH4NO3 → NH4TcO4 + HNO3
It thermally decomposes under inert atmosphere at 700 °C to technetium dioxide:
- NH4TcO4 → TcO2 + 2 H2O + 1/2 N2
Chemical properties
Passing hydrogen sulfide through acidic solutions of ammonium pertechnetate produces Technetium(VII) sulfide:[2][3][4]
- 2NH
4TcO
4 + 7H
2S + 2HCl → Tc
2S
7↓ + 2NH
4Cl + 8H
2O
- 2NH
References
- ↑ "Ammonium pertechnetate[99Tc]". https://pubchem.ncbi.nlm.nih.gov/compound/9577286#section=Top.
- ↑ Boschke, Friedrich L. (31 December 1981) (in en). Inorganic Chemistry. Walter de Gruyter GmbH & Co KG. p. 131. ISBN 978-3-11-270829-3. https://books.google.com/books?id=PPQIEQAAQBAJ&dq=Technetium+heptasulfide&pg=PA131. Retrieved 23 July 2024.
- ↑ "CharChem. Technetium(VII) sulfide". easychem.org. http://www.easychem.org/en/subst-ref/?id=5762&langs=%2A.
- ↑ Poineau, Frederic; Burton-Pye, Benjamin P.; Sattelberger, Alfred P.; Czerwinski, Kenneth R.; German, Konstantin E.; Fattahi, Massoud (2018). "Speciation and reactivity of heptavalent technetium in strong acids". New Journal of Chemistry 42 (10): 7522–7528. doi:10.1039/c7nj04912a. https://istina.ipmnet.ru/publications/article/134243400/. Retrieved 23 July 2024.
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