Calcium carbide

Calcium carbide is also called calcium carbide. The chemical formula is CaC2. An important chemical raw material produced by chemical processing of limestone. In 1892, the French H. Maisan and the American T.L. Wilson simultaneously developed the electric furnace reduction method of calcium carbide, and the United States realized industrial production in 1895. The nature of calcium carbide is related to purity, industrial products are mostly mixtures of calcium carbide and calcium oxide, and contain trace amounts of sulfur, phosphorus, nitrogen and other impurities, and the color is gray, brown to black with the increase of impurity content.

Calcium carbide as a teaching reagent; Used in the production of acetylene gas, polyvinyl chloride, lime nitrogen, dicyandiamide, iron and steel desulfurizer, etc. Used in the electronics industry; Calcium carbide is used for chemical production accounts for about 60%, and the remaining 40% is used for metal welding and cutting. Using calcium carbide as raw material can produce a series of chemical products, such as PVC resin, polyvinyl alcohol, vinyl acetate, neoprene rubber, butanol, octanol, tricyanoethylene, tetracyanoethylene, acetaldehyde, acetylene carbon black, lime nitrogen, etc. The largest use is the production of PVC resin, accounting for 60% of the consumption of calcium carbide for chemical purposes. Calcium carbide powder is irritating and can damage the skin and respiratory system.

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