Barium tungstate is an inorganic chemical compound of barium and the tungstate anion.
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3D model (JSmol)
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ECHA InfoCard | 100.029.195 |
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Properties[3] | |
BaWO4 | |
Molar mass | 385.16 g·mol−1 |
Appearance | white solid |
Density | 5.04 g·cm−3 (25 °C) 7.26 g·cm−3 (high pressure form)[1] |
Melting point | 1502 °C[2] |
insoluble | |
Structure[4] | |
tetragonal | |
a = 561.4 pm, c = 1271.5 pm
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GHS labelling:[3] | |
H302, H332 | |
Related compounds | |
Related compounds
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Radium tungstate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Barium tungstate can be obtained from the precipitation reaction between barium nitrate and ammonium paratungstate or sodium tungstate.[5][6]
It is a white solid,[3] which at normal conditions forms tetragonal crystals similar to scheelite, CaWO4. Under pressures above 7 GPa, the compound undergoes transformation to a monoclinic structure similar to fergusonite, YNbO4.[7]
Barium tungstate can be used as a frequency shifter in laser technology.[8] It has uses in X-ray photography and as a pigment.[4]