Kenya Chemical is one of the leading Calcium carbide Exporters, Manufacturers, Suppliers, and Producers in Nairobi, Rwanda, Uganda, Tanzania, Burundi, Congo, South Africa, South Sudan, Zambia, Nigeria, Namibia, Ghana, Malawi Nairobi Kenya.
Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of CaC2. Its main use industrially is in the production of acetylene and calcium cyanamide.
The pure material is colorless, however, pieces of technical-grade calcium carbide are grey or brown and consist of about 80–85% of CaC2 (the rest is CaO (calcium oxide), Ca3P2 (calcium phosphide), CaS (calcium sulfide), Ca3N2 (calcium nitride), SiC (silicon carbide), etc.). In the presence of trace moisture, technical-grade calcium carbide emits an unpleasant odor reminiscent of garlic.
Applications of calcium carbide include the manufacture of acetylene gas, and for generation of acetylene in carbide lamps; manufacture of chemicals for fertilizer; and in steelmaking.
Other names
Calcium percarbide
Calcium carbide
Calcium dicarbide
calcium carbide manufacturer
Commodity: Calcium carbide
Physical appearance: Brown, grey, black, purple solid
CAS NO:75-20-7
Molecular Formula:CaC2
Molecular Weight:64.10
.Application of calcium carbide
Calcium carbide is one of the basic raw materials of the organic synthesis industry. It is also an important raw material of the acetylene industry.
(1)The reaction of calcium carbide with water, producing acetylene and calcium hydroxide.[CaC2 + 2 H2O → C2H2 + Ca(OH)2].
This reaction was the basis of the industrial manufacture of acetylene and is the major industrial use of calcium carbide.
eg.synthesize rubber,synthetic resin,acetone,ketene and carbon black.Meanwhile, the oxygen-acetylene flame is widely used in metal welding and cutting.
(2)Heating powdered calcium carbide and nitrogen to produce calcium cyanamide, which can react with sodium chloride producing black cyanide. black cyanide is used in gold mining and non-ferrous metal industry.
(3)Steelmaking: as a powerful deoxidizer at ladle treatment facilities.
(4)Calcium carbide is used in carbide lamps, in which water drips on the carbide and the acetylene formed is ignited.
(5)In the ripening of fruit, calcium carbide is sometimes used as a source of acetylene gas, which is a ripening agent similar to ethylene.
Steelmaking
Calcium carbide is used:
in the desulfurization of iron (pig iron, cast iron, and steel
as a fuel in steelmaking to extend the scrap ratio to liquid iron, depending on economics.
as a powerful deoxidizer at ladle treatment facilities.
Other uses
Calcium carbide is sometimes used as a source of acetylene gas, which is a ripening agent similar to ethylene. However, this is illegal in some countries as, in the production of acetylene from calcium carbide, contamination often leads to trace the production of phosphine and arsine. These impurities can be removed by passing the acetylene gas through acidified copper sulfate solution, but, in developing countries, this precaution is often neglected.
Calcium carbide is used in toy cannons such as the Big-Bang Cannon, as well as in bamboo cannons. In the Netherlands, calcium carbide is used around new-year to shoot with milk churns.
Calcium carbide, together with calcium phosphide, is used in floating, self-igniting naval signal flares, such as those produced by the Holmes' Marine Life Protection Association.
Calcium carbide is used to determine the moisture content of the soil. When soil and calcium carbide are mixed in a closed pressure cylinder, the water content in the soil reacts with calcium carbide to release acetylene whose pressure can be measured to determine the moisture content.
Calcium carbide is sold commercially as a mole repellent. When it comes into contact with water, the produced gas drives away the moles.
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