Ammonium pertechnetate is a chemical compound with the formula NH₄TcO₄. It is the ammonium salt of pertechnetic acid. The most common form uses ⁹⁹Tc. The compound is readily soluble in aqueous solutions forming

ammonium The ammonium cation is a positively-charged polyatomic ion with the chemical formula or . It is formed by the protonation of ammonia (). Ammonium is also a general name for positively charged or protonated substituted amines and quaternar ...

and

pertechnetate The pertechnetate ion () is an oxyanion with the chemical formula . It is often used as a convenient water-soluble source of isotopes of the radioactive element technetium (Tc). In particular it is used to carry the 99mTc isotope (half-life 6 hou ...

ions. It can be synthesized by the reaction of pertechnetic acid and

ammonium nitrate Ammonium nitrate is a chemical compound with the chemical formula . It is a white crystalline salt consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, although it does not form hydrates. It ...

: :HTcO₄ + NH₄NO₃ → NH₄TcO₄ + HNO₃ It thermally decomposes under inert atmosphere at 700 °C to technetium dioxide: :NH₄TcO₄ → TcO₂ + 2 H₂O + 1/2 N₂

References

{{Technetium compounds Pertechnetates