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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;3*2-1(3)4/q;3*-1Key: AEFUOHSKBCUMLM-UHFFFAOYSA-N
SMILES (=O)().(=O)().(=O)().
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 , 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.

Synthesis

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

Ac(OH)₃ + 3HNO₃ → Ac(NO₃)₃ + 3H₂O

Properties

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

4Ac(NO₃)₃ → 2Ac₂O₃ + 12NO₂ + 3O₂

This salt is used as a source of Ac ions to obtain insoluble actinium compounds by precipitation from aqueous solutions.

References

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.

• Actinium compounds
• Nitrates