Traditional Culture Encyclopedia - Traditional culture - How to make CaC2?
How to make CaC2?
is produced by heating quicklime and coke in an electric furnace to 2℃, and its scientific name is calcium carbide. Because it was made in an electric furnace, it got an unscientific name-calcium carbide.
2co3+2c = ca2c+3co2 ↑ (heated by electric furnace at 2℃)
chemical properties: the molecular formula of calcium carbide is CaC2, and its molecular weight is 64.1. Industrial products are gray, tan or black solids, and those with high calcium carbide are purple. The new fracture surface of calcium carbide is shiny, and it is grayish white when exposed to air because of absorbing water. The relative density is 2.22(18℃). Industrial products generally contain calcium carbide 8%. Melting point is 23℃. Can conduct electricity, the higher the purity, the easier it is to conduct electricity. Chemical properties are very active and can react with many gases and solutions at appropriate temperatures. When it meets water, it decomposes violently to produce acetylene gas and calcium hydroxide, and gives off a lot of heat. It can react violently with chlorine, hydrogen chloride, sulfur, phosphorus and ethanol at high temperature.
Calcium carbide is an important basic raw material for organic synthesis industry. Ethylene, chloroprene rubber, calcium cyanamide, acetic acid and trichloroethylene can be made from calcium carbide acetylene. Calcium carbide is also used as a desulfurizing agent for steel and cutting and welding metals.
/question/8188761.html
- Previous article:What herbal poultices to take for anemia? What herbal poultice to eat for blood diseases?
- Next article:Pumpkin varieties
- Related articles
- Meizhou, hometown of overseas Chinese
- What's delicious in Wuyi, Zhejiang?
- How to connect an external stereo to a 55-inch millet TV?
- Dior skirt is suspected of copying China horse skirt. How to protect the elements of traditional culture?
- The Historical Origin of Tibetan Dice Games
- How to innovate and develop the clothing industry
- How does the Yin-Yang division kill filth in the afternoon through the tactics of Yin-Yang division killing filth in the afternoon?
- The difference between skin management and beauty
- Research report on hometown culture
- Classical and modern collision creative cozy super personalized