Neodymium Arsenate

Neodymium arsenate

Names
Other names Neodymium(III) arsenate
Identifiers
CAS Number	15479-84-2 Y
3D model (JSmol)	Interactive image
InChI InChI=1S/AsH3O4.Nd/c2-1(3,4)5;/h(H3,2,3,4,5);/q;+3/p-3 Key: NDJXBXBULAKKIO-UHFFFAOYSA-K
SMILES [O-][As](=O)([O-])[O-].[Nd+3]
Properties
Chemical formula	NdAsO4
Molar mass	313.89
Appearance	faint pink powder
Density	5.3-5.9 g/cm3[1]
Solubility in water	insoluble
Hazards
GHS pictograms
GHS Signal word	Danger
GHS hazard statements	H350, H300, H314, H410
GHS precautionary statements	P201, P264, P273, P280, P305+351+338, P310
Related compounds
Other anions	Neodymium(III) nitrate Neodymium(III) phosphate Neodymium(III) antimonate Neodymium(III) bismuthate Neodymium(III) carbonate
Other cations	PrAsO4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Neodymium arsenate, also known as neodymium(III) arsenate, is the arsenate of neodymium with the chemical formula of NdAsO₄. In this compound, neodymium exhibits the +3 oxidation state. It has good thermal stability, and its pK_sp,c is 21.86±0.11.^[2]

Preparation

Neodymium arsenate can be obtained from the reaction between sodium arsenate (Na₃AsO₄) and neodymium chloride (NdCl₃) in solution:^[3]

Na₃AsO₄ + NdCl₃ → 3 NaCl + NdAsO₄↓

See also

• Arsenic

References

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