Calcium Tungstate Applications

Calcium tungstate is a very important chemical materials, which has applications in mainly ways:

1. For production of ammonium paratungstate, tungsten trioxide, tungsten iron, steel, carbide, tungsten materials, tungsten and tungsten alloys and other tungsten products;

2. Used as raw materials of tungsten series chemical products;

3. For fluorescent paint, photography screen pipe, medicine, X-ray photograph and fluorescent lighting;

4. Calcium tungstate is also used for luminous paint, fluorescent lights, neon lights, X-rays screen, medicine, scintillation counter and lasers.

Calcium Tungstate Advantages

The interest in CaWO4 and CaMoO4 has been driven by the fact that these compounds have especially attractive properties for a variety of optical applications (phosphors, laser hosts, scintillators).

Recently, CaWO4 was implemented in the CRESST dark matter search, enabling discrimination between electron and nuclei recoils. Different types of interaction events can be identified by simultaneously measuring a combination of phonon and scintillation signals from cryogenic phonon-scintillation detectors (CPSD) operating at milli-kelvin temperatures. This technique offers high sensitivity and the unique advantage of background identification, which is crucially important for experimental searches for rare events.

Calcium Tungstate Manufacturing Process

The following methods is for calcium tungstate manufacturing process:

1.Mix sodium tungstate and sodium sulfide and dissolve into water, then add zinc chloride aqueous solution. After filtration, treat filtrate with calcium chloride, and then we can get calcium tungstate.

2.Calcium oxide/calcium hydroxide reacts with tungsten oxide/tungsten tetrahydroxide in alkali hydroxide/carbonate solution, and then calcium tungstate is obtained.

3.Burning tungsten trioxide and calcium carbonate in 1070℃ or treatment between sodium tungstate solution and calcium chloride solution or processing scheelite.

Calcium Tungstate

Calcium tungstate is white powder with tetragonal structure. Its relative density is 6.062. Slightly soluble in water and ammonium chloride solution. Dissociation in hydrochloric. Calcium tungstate is a very important chemical materials, mainly used for production of ammonium paratungstate, tungsten trioxide, tungsten iron, steel, carbide, tungsten materials, tungsten and tungsten alloys and other tungsten products.

Calcium Tungstate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Sodium Tungstate Features&Specifications

Sodium Tungstate
Features:

• Used as anti-diabetic agent
• Insoluble in alcohol
• Precise composition

Specifications :

Na2WO4.2H2O	Mol. Wt. 329.86
Assay	98% Min
Free alkali (as NaOH)	0.1% Max
Chloride (Cl)	0.01% Max
Sulphate (SO4)	0.02% Max
Total Nitrogen (N)	0.005% Max
Iron (Fe)	0.002% Max

Colorless or white crystalline powder

Slightly soluble in ammoniac solutions

Not very soluble in common organic solvents

Insoluble in alcohol.

Soluble in water

Sodium Tungstate Applications

Applications:

Catalyst:

• Sodium tungstate is used as catalyst in paint dyes, pigment pharmaceuticals and many more chemical reactions like epoxidation of alkenes and oxidation of alcohols into aldehydes or ketones.

Anti-Diabetic Agent:

• Sodium tungstate is an effective antidiabetic agent when administered orally. It improves pancreatic function and beta cell proliferation. It activates glycogen synthesis through an insulin receptor-independent pathway.

Anti-Obesity Agent:

• There are dual effects of sodium tungstate on adipocyte biology: inhibition of adipogenesis and stimulation of cellular oxygen consumption. Sodium tungstate inhibits adipocyte differentiation and regulates the mitochondrial oxygen consumption of adipose cells. These effects contribute to the anti-obesity activity of sodium tungstate and confirm its potential as a powerful alternative for the treatment of obesity.

Permanent Chemical Modifier:

• Sodium tungstate is used for slurry sampling electrothermal atomic absorption spectrometric determination of indium in soils.

Other Uses:

• Manufacture of metal tungsten, tungsten acid, tungsten salts, dyes.
• Manufacture of heteropolyacid color lakes used in printing inks, plants, waxes, glasses, and textiles.
• Analytical reagent. Reagent for alkaloids, uric acid and plasma proteins.
• Fuel-cell electrode material.
• Fire proofing agent.