Sodium tungstate (ST) is commonly used as feedstock for ammonium paratungsate, but can also be used for catalyst and pigments.

Blue/Yellow tungsten oxide (BTO/YTO) is the intermediate product of pure tungsten powder.

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Ammonium paratungstate (APT) is the intermediate product of Blue/Yellow Tungsten Oxide.

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Ammonium metatungstate (AMT) is used as Catalyst in various chemical reactions, particularly in the production of fine chemicals and in organic synthesis.