2. Attribute:Acetylene is a colorless pure slightly aromatic odor of gas, since the acetylene from calcium carbide system containing phosphine, arsine, and impurities, such as hydrogen sulfide has a special garlic smell and irritation toxicity; be liquefied under pressure , the sublimation point -83.8 , and 1.19 × 105Pa pressure, the melting point of -81 , inflammable, explosive limit in the air is very wide, 2.5% and 80%, and is insoluble in water, soluble in petroleum ether , ethanol, organic solvents, such as benzene, acetone great solubility, at 1.2 MPa, a volume of 300 volume of acetone can be dissolved acetylene, liquid acetylene will be slightly shocked by the explosion in a steel tube industry Sheng Man acetone saturated porous materials (such as asbestos, diatomite, cork, etc.), in 1 to 1.2 MPa acetylene will be under pressure to acetone, storage and security.
3:attention:Acetylene can produce high-temperature combustion, the oxy-acetylene flame temperature can reach 32 , for cutting and welding metal. Adequate supply of air, can be safely sent burning bright white, not universal or Electric power can be used as a light source. Acetylene chemical properties and lively, with many reagent reacted. In the 20th century, before the 1960s, acetylene organic synthesis is the most important raw material, is still one of the important raw materials. As with hydrogen chloride, hydrocyanic acid, acetic acid addition, the polymer can generate production of raw materials