Some people calculate that the content of metallic tungsten in ammonium metatungstate is 66.73%. But in fact, the content of metallic tungsten in ammonium metatungstate is not a fixed value, because it is affected by many factors, including the purity of raw materials, reaction conditions and production process.
From the range of content, ammonium metatungstate usually contains tungsten of high purity, but the specific content depends on the preparation method and product purity. In some products, such as ammonium metatungstate supplied by Qiyuan Pharmaceutical and Chemical Industry, its purity is as high as 99.9%.
From the content of tungsten trioxide, the content of tungsten trioxide (WO₃) in ammonium metatungstate is ≥81.5%. This can be used as an indirect indicator to estimate the content of metallic tungsten in ammonium metatungstate, because tungsten trioxide is a common oxide form of tungsten.
Influencing factors of metallic tungsten content in ammonium metatungstate
The content of metallic tungsten in ammonium metatungstate is affected by the purity of raw materials, reaction conditions (such as temperature, pressure and reaction time) and the production process. Changes in these factors may lead to differences in tungsten content in the final product.
In summary, the specific content of metallic tungsten in ammonium metatungstate depends on many factors and cannot be given a fixed value. In practical application, if the exact content of metallic tungsten in ammonium metatungstate needs to be determined, it can be determined by chemical analysis and other methods.
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