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tungstate
tungstate Chem. (ˈtʌŋstət) [f. tungstic + -ate4.] A salt of tungstic acid.1800 tr. Lagrange's Chem. I. 371 The other is known by mineralogists, under the name of wolfram..this is the tungstate of iron. 1839 H. T. De la Beche Rep. Geol. Cornwall, etc. xv. 584 Except when mixed with wolfram, or the tu...
Oxford English Dictionary
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Tungstate
The simplest tungstate ion is , "orthotungstate". Unlike chromate, tungstate is not a good oxidizer, but like chromate, solutions of tungstate condense to give the isopolytungstates upon acidification.
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Silver tungstate
Silver tungstate is an inorganic tungstate with the chemical formula Ag2WO4. , while β- and γ-silver tungstate are metastable.
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Cadmium tungstate
Cadmium tungstate was used as a replacement of calcium tungstate in some fluoroscopes since the 1940s. Similar materials are calcium tungstate (scheelite) and zinc tungstate.
It is toxic, as are all cadmium compounds.
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Nickel tungstate
Preparation
Nickel tungstate can be prepared by the reaction of nickel(II) nitrate and sodium tungstate:
Ni(NO3)2 + Na2WO4 → NiWO4 + 2 NaNO3
Nickel Nickel tungstate undergoes a phase transition at 700°C.
Properties
Nickel tungstate is a light brown, odourless solid that is insoluble in water.
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Neodymium tungstate
Neodymium tungstate is an inorganic compound, a salt of neodymium and tungstic acid with the chemical formula Nd2(WO4)3. Preparation
Reacting neodymium(III) oxide and tungsten(VI) oxide would produce anhydrous neodymium tungstate:
Nd2O3 \ + \ 3WO3 ->[{}\atop\ce{1000^\circ
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Barium tungstate
Barium tungstate is an inorganic chemical compound of barium and the tungstate anion. tungstate.
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Zirconium tungstate
Zirconium tungstate () is the zirconium salt of tungstic acid and has unusual properties. Cubic phase
Cubic zirconium tungstate (alpha-ZrW2O8), one of the several known phases of zirconium tungstate (ZrW2O8) is perhaps one of the most studied
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Caesium tungstate
Caesium tungstate or cesium tungstate is an inorganic chemical compound that is notable for forming a very dense liquid in solution. Preparation
Caesium tungstate can be obtained by the reaction between caesium chloride (CsCl) and silver tungstate (Ag2WO4) or the reaction between tungstic
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钨酸锆
Monocrystal Elastic Constants of the Negative-Thermal-Expansion Compound Zirconium Tungstate (ZrW2O8) . Phys. Rev.
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فولفراميت
الوُلْفْراميت معدن يتألف من مزيج مختلف النِّسَب من تُنجسْتات tungstate الحديد وتُنجسْتات المنغنيز.
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Lithium tungstate
Lithium tungstate is the inorganic compound with the formula Li2WO4. It is a white solid that is soluble in water. Uses
Lithium tungstate is used to produce high density aqueous polytungstate (metatungstate) solutions.
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Sodium tungstate
Otherwise sodium tungstate has only niche applications. As such, one niche use of sodium tungstate is in experimental biology—where it has been found that adding sodium tungstate to the drinking water of mice
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Radium tungstate
Radium tungstate is an inorganic compound of radium, oxygen, and tungsten with the chemical formula . This is a salt of wolframic acid and radium.
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Ferberite
Ferberite is a black monoclinic mineral composed of iron(II) tungstate, FeWO4. See also
List of minerals
List of minerals named after people
References
External links
Mineral Galleries
Iron(II) minerals
Tungstate minerals
Monoclinic
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