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Actinium(III) nitrate is an inorganic compound, actinium salt of nitric acid with the chemical formula Ac(NO₃)₃. The compound looks like white substance, readily soluble in water.^[1]

Synthesis

Actinium nitrate can be obtained by dissolving actinium or actinium hydroxide in nitric acid.

{\mathsf {Ac(OH)_{3}+3HNO_{3}\ \xrightarrow {} \ Ac(NO_{3})_{3}+3H_{2}O}}

Properties

Actinium(III) nitrate decomposes on heating above 600 °C:

{\mathsf {4Ac(NO_{3})_{3}=2Ac_{2}O_{3}+12NO_{2}+3O_{2}}}

This salt is used as a source of Ac³⁺ ions to obtain insoluble actinium compounds by precipitation from aqueous solutions.^[2]

References

^ Ferrier, Maryline G.; Stein, Benjamin W.; Batista, Enrique R.; Berg, John M.; Birnbaum, Eva R.; Engle, Jonathan W.; John, Kevin D.; Kozimor, Stosh A.; Lezama Pacheco, Juan S.; Redman, Lindsay N. (22 March 2017). "Synthesis and Characterization of the Actinium Aquo Ion". ACS Central Science. 3 (3): 176–185. doi:10.1021/acscentsci.6b00356. ISSN 2374-7943. PMC 5364452. PMID 28386595.
^ Salutsky, M. L.; Kirby, H. W. (1 November 1956). "Precipitation of Actinium Oxalate from Homogeneous Solution". Analytical Chemistry. 28 (11): 1780–1782. doi:10.1021/ac60119a044. ISSN 0003-2700. Retrieved 18 August 2021.

[1] Ferrier, Maryline G.; Stein, Benjamin W.; Batista, Enrique R.; Berg, John M.; Birnbaum, Eva R.; Engle, Jonathan W.; John, Kevin D.; Kozimor, Stosh A.; Lezama Pacheco, Juan S.; Redman, Lindsay N. (22 March 2017). "Synthesis and Characterization of the Actinium Aquo Ion". ACS Central Science. 3 (3): 176–185. doi:10.1021/acscentsci.6b00356. ISSN 2374-7943. PMC 5364452. PMID 28386595.

[2] Salutsky, M. L.; Kirby, H. W. (1 November 1956). "Precipitation of Actinium Oxalate from Homogeneous Solution". Analytical Chemistry. 28 (11): 1780–1782. doi:10.1021/ac60119a044. ISSN 0003-2700. Retrieved 18 August 2021.

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Synthesis

Properties

References

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