chemistry Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and chemical compound, compounds made of atoms, molecules a ...

, paratungstate refers to the anion with the formula ₁₂O₄₂sup>12- and salts derived from this anion. The term also refers to protonated derivatives of this anion, including ₂W₁₂O₄₂sup>10-.

Ammonium paratungstate Ammonium paratungstate (or APT) is a white crystalline salt (chemistry), salt with the chemical formula (NH4)10(H2W12O42)·4H2O. It is described as "the most important raw material for all other tungsten products." Production From tungsten ores T ...

(or APT), (NH₄)₁₀ ₂W₁₂O₄₂is a key intermediate in the purification of tungsten from its

ore Ore is natural rock or sediment that contains one or more valuable minerals, typically including metals, concentrated above background levels, and that is economically viable to mine and process. The grade of ore refers to the concentration ...

The salt (NH₄)₁₀(W₁₂O₄₂)·4H₂O has been characterized by

X-ray crystallography X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to Diffraction, diffract in specific directions. By measuring th ...

. The unprotonated anion ₁₂O₄₂sup>12- has C_2h

symmetry Symmetry () in everyday life refers to a sense of harmonious and beautiful proportion and balance. In mathematics, the term has a more precise definition and is usually used to refer to an object that is Invariant (mathematics), invariant und ...

References

{{Authority control Tungstates Transition metal oxyanions

See also

References