What Are Differences of Ammonium Paratungstate And Ammonium Metatungstate?

Ammonium paratungstate (APT) and ammonium metatungstate (AMT) are two different types of ammonium tungstate compounds with different chemical properties and applications.

Ammonium paratungstate (APT) is a white crystalline salt with the chemical formula (NH4)10[H2W12O42]. It is commonly used as an intermediate in the production of tungsten metal and tungsten oxide. APT is also used as a raw material for the production of tungsten carbide powder, which is widely used in the manufacture of cutting tools, mining tools, and wear-resistant parts.

Ammonium metatungstate (AMT) is another white crystalline salt with the chemical formula (NH4)6H2W12O40. It is used as a starting material for the production of other tungsten compounds, such as tungsten oxide and tungsten metal. AMT is also used as a reagent in analytical chemistry for the detection and quantification of various elements.

The main differences between APT and AMT is their chemical structure. APT is a paratungstate salt, which means that it contains multiple tungsten-oxygen clusters linked together. On the other hand, AMT is a metatungstate salt, which means that it contains a single tungsten-oxygen cluster.

In summary, APT and AMT are both ammonium tungstate compounds that are used in various applications, but they have different chemical structures and properties.

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