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Ammonium pertechnetate
Chemical compound From Wikipedia, the free encyclopedia
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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.
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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 ammomium pertechnetate produces Technetium(VII) sulfide:[2][3][4]
- 2NH4TcO4 + 7H2S + 2HCl → Tc2S7↓ + 2NH4Cl + 8H2O
References
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