![]() ![]() Long storage of a CHROMIUM(II) CHLORIDE solution culminated in an explosion. Their reactions with oxidizing agents may be violent. Inorganic reducing agents, such as CHROMIUM(II) CHLORIDE, react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive. Stable in dry air, but oxidizes rapidly in moist air or standing water with liberation of Hydrogen. CHROMIUM(II) CHLORIDE is used to make other chemicals and as an oxygen absorbent. Immediate steps must be taken to prevent its spread to the environment. The primary hazard is the threat to the environment. General DescriptionĪ white crystalline solid. It is also used in the Takai olefination to prepare vinyl iodides from aldehydes in the presence of iodoform. It is a reagent in the Nozaki-Hiyama-Kishi reaction. ![]() UsesĬhromium(II) chloride is used as a precursor to other inorganic and organometallic chromium complexes. The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties. The solution that turns light blue may be used in organic reduction.Ĭhromous chloride is a white-to-bluish solid or lustrous needles which turn Blue in water Uses Bubble CO2 through the solution to agitate it and prevent any possible reoxidation of chromium by air. To the amalgamated zinc add 800 mL water, 80 mL conc. As a reducing agent, it is used to reduce alpha-haloketones to parent ketones, epoxides to olefins, chloroimides to imines, and aromatic aldehydes to corresponding alcohols.Ĭhromium(II) chloride may be prepared by the reaction of chromium with anhydrous hydrogen chloride at 600 to 700☌:Īlso, the compound may be prepared by the reduction of chromium(III) chloride with hydrogen at 500 to 600☌:Īn aqueous solution of chromium(II) chloride for organic reduction may be prepared as follows:Īmalgamate zinc by shaking 400 g zinc dust with a solution containing 32g HgCl2, 20 mL conc. The tetrahydrate occurs in blue hygroscopic crystalline form, that changes to green modification above 38☌ decomposes to trihydrate at 51☌ soluble in water.Ĭhromium(II) chloride is used as a reducing agent as a catalyst in organic reactions in chromium plating of metals and as an analytical reagent for the dehalogenation of vic-dihalides. White lustrous needles or fibrous mass hygroscopic highly soluble in water, forming blue solution insoluble in ether. ![]()
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