Ammonium pertechnetate

Chemical compound From Wikipedia, the free encyclopedia

Ammonium pertechnetate

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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Ammonium pertechnetate
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Ammonium pertechnetate
Names
IUPAC name
Ammonium pertechnetate
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/H2O.3O.Tc/h1H2;;;;/q;;;;+1/p-1 Y
    Key: WJULHBIORCQBSY-PUQAOBSFSA-O Y
  • [O-][Tc](=O)(=O)=O.[NH4+]
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).
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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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