Neodymium arsenate

Neodymium arsenate, also known as neodymium arsenate, is the arsenate of neodymium with the chemical formula of NdAsO₄. In this compound, neodymium exhibits the +3 oxidation state. It has good thermaostability, and its pK_sp,c is 21.86±0.11.

Preparation

Neodymium arsenate can be obtained from the reaction between sodium arsenate and neodymium chloride in solution:
When crystallizing from a lead pyroarsenate flux, neodymium arsenate crystals produced explode when cooled.
Neodymium arsenate also occurs in nature as a mineral, Arsenoflorencite-(Nd).