Actinium(III) nitrate

Actinium(III) nitrate
	; The glass is discolored due to the high radiation of actinium
Names
	Other names Actinium nitrate
Identifiers
CAS Number	211179-74-7 ;
3D model (JSmol)	Interactive image;
PubChem CID	129641620;
	InChI InChI=1S/Ac.3NO3/c;32-1(3)4/q;3-1 Key: AEFUOHSKBCUMLM-UHFFFAOYSA-N;
	SMILES [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Ac];
Properties
Chemical formula	Ac(NO3)3
Molar mass	413.04
Appearance	White substance
Solubility in water	Soluble
Hazards
	GHS labelling:
Signal word	Warning
Related compounds
Related compounds	Thorium(IV) nitrate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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.

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[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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