Lithium tungstate is the inorganic compound with the formula Li2WO4, appears white solid that is soluble in water. The compound is one of the several other tungstates, compounds that feature the tetrahedral WO42- anion.
Lithium tungstate is used to produce high density water solutions. This use was developed in the early 1990s to address issues with existing high density fluids such as toxicity, safety, and stability, It can safely be used in an indoor environment without a fume hood with only ordinary common sense safety precautions such as protective gloves and safety glasses.
The salt consists of tetrahedral coordinated Li and W content bridged by oxides. The solid undergoes phase transitions at high pressures, such that the coordination geometry at tungsten becomes octahedral.
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