French
DeutschAmmonium pertechnetate
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 Ammonium pertechnetate | |
| Names | |
|---|---|
| IUPAC name Ammonium pertechnetate | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
PubChem CID | |
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| Properties | |
| H4NO4Tc | |
| Molar mass | 180 g·mol−1 |
| Related compounds | |
Other anions | Ammonium nitrate |
Other cations | Sodium pertechnetate Potassium pertechnetate Calcium pertechnetate |
Related compounds | Perchloric acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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
[edit]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
[edit]Passing hydrogen sulfide through acidic solutions of ammomium pertechnetate produces Technetium(VII) sulfide:[2][3][4]
- 2NH4TcO4 + 7H2S + 2HCl → Tc2S7↓ + 2NH4Cl + 8H2O
References
[edit]- ^ "Ammonium pertechnetate[99Tc]".
- ^ Boschke, Friedrich L. (31 December 1981). Inorganic Chemistry. Walter de Gruyter GmbH & Co KG. p. 131. ISBN 978-3-11-270829-3. Retrieved 23 July 2024.
- ^ "CharChem. Technetium(VII) sulfide". easychem.org. Retrieved 23 July 2024.
- ^ 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. Retrieved 23 July 2024.