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To prevent this, anhydrous solvents must be used when performing certain reactions. Examples of reactions requiring the use of anhydrous solvents are the Grignard reaction and the Wurtz reaction. Solvents have typically been dried using distillation or by reaction with reactive metals or metal hydrides. These methods can be dangerous and are a ...
A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for polar molecules, and the most common solvent used by living things; all the ions and proteins in a cell are dissolved in water within the cell. Major uses of solvents are in paints, paint removers, inks, and dry cleaning. [2]
Glycerol is a stable preserving agent for botanical extracts that, when utilized in proper concentrations in an extraction solvent base, does not allow inverting or reduction-oxidation of a finished extract's constituents, even over several years. [citation needed] Both glycerol and ethanol are viable preserving agents.
Anhydrous MgCl 2 is the main precursor to metallic magnesium. The reduction of Mg 2+ into metallic Mg is performed by electrolysis in molten salt . [ 2 ] [ 11 ] As it is also the case for aluminium , an electrolysis in aqueous solution is not possible as the produced metallic magnesium would immediately react with water, or in other words that ...
The salt is known in anhydrous form as well as hydrates Na 2 HPO 4 ·nH 2 O, where n is 2, 7, 8, and 12. All are water-soluble white powders. The anhydrous salt is hygroscopic. [1] The pH of disodium hydrogen phosphate water solution is between 8.0 and 11.0, meaning it is moderately basic: HPO 2− 4 + H 2 O ⇌ H 2 PO − 4 + OH −
Potassium acetate (as a substitute for calcium chloride or magnesium chloride) can be used as a deicer to remove ice or prevent its formation. It offers the advantage of being less aggressive on soils and much less corrosive: [5] for this reason, it is preferred for airport runways although it is more expensive.
Elution principle of column chromatography. In analytical and organic chemistry, elution is the process of extracting one material from another by washing with a solvent: washing of loaded ion-exchange resins to remove captured ions, or eluting proteins or other biopolymers from a gel electrophoresis or chromatography column.
Lithium acetate is used in the laboratory as buffer for gel electrophoresis of DNA and RNA.It has a lower electrical conductivity and can be run at higher speeds than can gels made from TAE buffer (5-30V/cm as compared to 5-10V/cm).