Tungsten Oxide Harzard Property
Tungsten oxide harzard property: It has low toxicity. It is irritating to eyes and skin. Weakness, fever, measles-like rash, and proteinuria of tungsten steel smelting workers may be related to the inhalation of tungsten trioxide during smelting. The product is non-flammable and irritating.
Therefore, workers during handling process should wear facial mask and gloves to avoid direct contact and inhale of tungsten oxide.
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Ammonium paratungstate (APT) is white crystalline powder, insoluble in water.
Ammonium metatungstate is white powder, soluble in water, solubility is 300g WO3/100ml H2O (in 25℃).
Sodium tungstate is an intermediate tungstate produced from tungsten concentrate, is the raw material for APT.