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Sodium tungstate dihydrate boils at 665 C and is white to colorless crystals. It is soluble in water and slightly soluble in alcohol, but is insoluble in acid. It is an excellent solvent and can be used to dissolve many metals, organic compounds, and cellulose. It is also a good substitute for tungsten oxide for preparing aqueous solutions of that compound. It is a very useful reagent for the analysis of serum proteins and protein-free serum filtrate and has also been used for alkaloid precipitation.
Applied in organic chemistry, sodium tungstate acts as a catalyst for the epoxidation of alkenes and in the oxidation of alcohols to aldehydes or ketones. It can be combined with hydrogen peroxide to form a derivatization reagent for the determination of secondary amines by a fluorimetric method. It is also an inhibitor of acid phosphatases.
It is an irritant and may be harmful if swallowed. It can cause skin and eye irritation. If ingested, contact a poison control center or physician immediately.
Sodium tungstate is available in a variety of forms, including high purity and submicron particles, for research, development and production use. American Elements produces to numerous standard grades when applicable, including Mil Spec (military grade), ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade and USP/BP. In addition to these standard products, we have the capability to produce and supply custom formulations and higher purity materials. Contact us for more information.