(1) Acetylene Production Industrial Welding and Cutting: The flame temperature of acetylene and oxygen can reach 3100°C, and it is widely used in metal processing.
Chemical synthesis: Acetylene is a pivotal raw material in the synthesis of polyvinyl chloride (PVC), vinyl acetate, acrylic acid, and other compounds.
(2) Calcium Cyanamide Fertilizer: A slow-release nitrogen fertilizer: It is hydrolyzed in the soil to form cyanamide (H2CN2), which gradually releases nitrogen.
Soil improvement: It has the capacity to regulate soil acidity and has insecticidal and anti-weed properties (such as the capacity to combat nematodes).
(3) Metallurgical Industry
Metal Reducing Agent: It is employed in the production of metals with elevated melting points, including vanadium and tungsten, by reducing their oxides.
Desulfurizing Agent: It is used to remove sulfur impurities during the steel-smelting process.
(4) Other niche usesFruit ripening: The release of acetylene contributes to the formation of ethylene; however, its usage is prohibited in the European Union, Japan, and other regions due to residual safety concerns.
Early lighting: Calcium carbide lamps were once utilised in mines and outdoors, but now exist only as historical displays.
