Neodymium arsenate, also known as neodymium(III) arsenate, is the
arsenate
The arsenate ion is .
An arsenate (compound) is any compound that contains this ion. Arsenates are salts or esters of arsenic acid.
The arsenic atom in arsenate has a valency of 5 and is also known as pentavalent arsenic or As(V).
Arsenate resem ...
of
neodymium
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals. It is a hard, slightly malleable, silvery metal that quickly tarnishes i ...
with the chemical formula of NdAsO
4. In this compound, neodymium exhibits the +3 oxidation state. It has good thermal stability, and its p''K''
sp,c is 21.86±0.11.
Preparation
Neodymium arsenate can be obtained from the reaction between
sodium arsenate
Sodium arsenate is the inorganic compound with the formula Na3AsO4. Related salts are also called sodium arsenate, including Na2HAsO4 (disodium hydrogen arsenate) and NaH2AsO4 ( sodium dihydrogen arsenate). The trisodium salt is a white or colo ...
(Na
3AsO
4) and
neodymium chloride (NdCl
3) in
solution
Solution may refer to:
* Solution (chemistry), a mixture where one substance is dissolved in another
* Solution (equation), in mathematics
** Numerical solution, in numerical analysis, approximate solutions within specified error bounds
* Soluti ...
:
[Gabisoniya, Ts. D.; Nanobashvili, E. M.. Synthesis of rare earth metal arsenates. ''Soobshcheniya Akademii Nauk Gruzinskoi SSR'' (1980), 97(2), 345-8. ]
: Na
3AsO
4 + NdCl
3 → 3 NaCl + NdAsO
4↓
See also
*
Arsenic
Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, but ...
References
Neodymium compounds
Arsenates
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