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The carbide product produced generally contains around 80% calcium carbide by weight. The carbide is crushed to produce small lumps that can range from a few mm up to 50 mm. The impurities are concentrated in the finer fractions. The CaC 2 content of the product is assayed by measuring the amount of acetylene produced on hydrolysis. As an ...
In chemistry, an acetylide is a compound that can be viewed as the result of replacing one or both hydrogen atoms of acetylene (ethyne) HC≡CH by metallic or other cations. Calcium carbide is an important industrial compound, which has long been used to produce acetylene for welding and illumination. It is also a major precursor to vinyl ...
Copper(I) acetylide, Kupfercarbid or cuprous acetylide, is a chemical compound with the formula Cu 2 C 2. Although never characterized by X-ray crystallography, the material has been claimed at least since 1856. [2] One form is claimed to be a monohydrate with formula Cu 2 C 2. H 2 O is a reddish-brown explosive powder.
Silver acetylide is an inorganic chemical compound with the formula Ag 2 C 2, a metal acetylide. The compound can be regarded as a silver salt of the weak acid , acetylene . The salt's anion consists of two carbon atoms linked by a triple bond , thus, its structure is [Ag + ] 2 [ − C≡C − ] .
Calcium carbide. Several carbides are assumed to be salts of the acetylide anion C 2− 2 (also called percarbide, by analogy with peroxide), which has a triple bond between the two carbon atoms. Alkali metals, alkaline earth metals, and lanthanoid metals form acetylides, for example, sodium carbide Na 2 C 2, calcium carbide CaC 2, and LaC 2. [2]
Strontium carbide (also more precisely known as strontium acetylide or strontium dicarbide) is a salt with chemical formula SrC 2. It was first synthesized by Moissan in 1894. [1] Strontium carbide can be formed in an electric arc furnace from strontium carbonate and a reductant, such as a reducing sugar [1] [2] or magnesium metal. [3]
Dilithium acetylide is an organometallic compound with the formula L i2 C 2. It is typically derived by double deprotonation of acetylene. X-ray crystallography confirms the presence of C≡C subunits attached to lithium, resulting in a polymeric structure. [ 3 ]
Barium carbide can be synthesized as an impure compound by reducing barium carbonate powder with metallic magnesium in the presence of carbon. [3] Barium carbide can also be made by reducing carbon dioxide with hot barium metal at 600°C. [4] These methods are used because of their high yield, and because the carbide is used to make acetylene.