Praseodymium arsenate

Praseodymium arsenate
Identifiers
CAS Number	15479-86-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	21428531 ;
PubChem CID	25022094;
	InChI InChI=1S/AsH3O4.Pr/c2-1(3,4)5;/h(H3,2,3,4,5);/q;+3/p-3 Key: WIIWZOSBVGBHHO-UHFFFAOYSA-K;
	SMILES [O-][As](=O)([O-])[O-].[Pr+3];
Properties
Chemical formula	PrAsO4
Appearance	solid
Solubility in water	insoluble
Related compounds
Other anions	Praseodymium(III) nitrate; Praseodymium(III) phosphate; Praseodymium(III) antimonate; Praseodymium(III) bismuthate; Praseodymium(III) carbonate
Other cations	NdAsO4
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Praseodymium arsenate is the arsenate salt of praseodymium, with the chemical formula of PrAsO₄. It has good thermal stability.^{[citation needed]} Its ferroelectric transition temperature is 52°C.^[1]

Preparation

Praseodymium arsenate be prepared by reacting sodium arsenate (Na₃AsO₄) and praseodymium chloride (PrCl₃) in a solution:^[2]

Na₃AsO₄ + PrCl₃ → 3 NaCl + PrAsO₄↓

The product can also be obtained by reacting praseodymium(III,IV) oxide and diammonium hydrogen arsenate in hot dilute nitric acid in a stoichiometric ratio.^[1]

^ ^a ^b Choudhary, R. N. P.. Structural and electrical properties of monoclinic praseodymium arsenic oxide (PrAsO4). Journal of Materials Science Letters, 1991. 10 (8): 432-434. DOI:10.1007/BF00838340
^ Gabisoniya, Ts. D.; Nanobashvili, E. M.. Synthesis of rare earth metal arsenates. Soobshcheniya Akademii Nauk Gruzinskoi SSR (1980), 97(2), 345-8. ISSN 0002-3167

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