Tungsten trioxide

Tungsten(VI) oxide, also known as tungsten trioxide or tungstic anhydride, WO₃, is a chemical compound containing oxygen and the transition metal tungsten. It is obtained as an intermediate in the recovery of tungsten from its minerals. Tungsten ores are treated with alkalis to produce WO₃. Further reaction with carbon or hydrogen gas reduces tungsten trioxide to the pure metal.

单词	Tungstic acid anhydride
释义	Tungstic acid anhydride 英语百科 Tungsten trioxide Tungsten(VI) oxide, also known as tungsten trioxide or tungstic anhydride, WO₃, is a chemical compound containing oxygen and the transition metal tungsten. It is obtained as an intermediate in the recovery of tungsten from its minerals. Tungsten ores are treated with alkalis to produce WO₃. Further reaction with carbon or hydrogen gas reduces tungsten trioxide to the pure metal.
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Tungstic acid anhydride

Tungsten trioxide