Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

We insist over the principle of development of 'High top quality, Performance, Sincerity and Down-to-earth working approach' to supply you with exceptional services of processing for Toluylene Diisocyanate Tdi , Cas 108-10-1 Trading , Trioctyl Trimellitate , We're searching ahead to setting up long-term company associations with you. Your comments and solutions are remarkably appreciated.
Polymethylmethacrylate Cas 9011-14-7 Calcium Carbide CAS 75-20-7 High Quality And Low Price – Chemwin Detail:

Product NameCalcium carbide

Molecular format:C2Ca

CAS No:75-20-7

Product molecular structure

Calcium carbide

Chemical Properties

Calcium carbide (molecule formula: CaC2), is a kind of important chemical raw materials produced from the chemical processing of limestone. In 1892, H. Maysan (French) and H. Wilson (United state) simultaneously developed a calcium carbide production approach based on furnace Reduction. The United State had successfully achieved industrial production in 1895. The property of calcium carbide is related to its purity. Its industrial product is mostly the mixture of calcium carbide and calcium oxide, and also contains trace amounts of sulfur, phosphorus, nitrogen and other impurities. With the increasing content of impurities, it color exhibits gray, brown to black. The melting point and electrical conductivity both decrease with the decrease of the purity. The purity of its industrial product is usually 80% with m.p. being 1800~2000 °C. At room temperature, it does not react with air, but it can have oxidation reaction at above 350 ℃, and have reaction with nitrogen at 600~700 ℃ to generate calcium cyanamide. Calcium carbide, when coming across with water or steam, generates acetylene and release a large amount of heating. CaC2 + 2H2O─ → C2H2 + Ca (OH) 2 + 125185.32J, 1kg of pure calcium carbide can produce 366 L of acetylene 366l (15 ℃, 0.1MPa). Thereby, for its storage: calcium carbide should be strictly kept away from water. It is usually packed in a sealed iron container, and sometimes stored in a dry warehouse being filled with nitrogen if necessary.

 

Application:

Calcium carbide (CaC2) has a garlic-like odor and reacts with water to form acetylene gas plus calcium hydroxide and heat. In the past, it was used in miners’ lamps to continuously produce a small acetylene flame to provide some illumination in coal mines.

Calcium carbide is used as a desulfurizer, dehydrant of steel, fuel in steel making, powerful deoxidizer and as a source of acetylene gas. It is used as a starting material for the preparation of calcium cyanamide, ethylene, chloroprene rubber, acetic acid, dicyandiamide and cyanide acetate. It is used in carbide lamps, toy cannons such as the big-bang cannon and bamboo cannon. It is associated with calcium phosphide and used in floating, self-igniting naval signalCalcium carbide is the most relevant carbide industrially because of its important role as the basis of acetylene industry. In locations where there is shortage of petroleum, Calcium Carbide is used as the starting material for the production of acetylene (1 kg of carbide yields ~300 liters acetylene), which, in turn, can be used as a building block for a range of organic chemicals (e.g. vinyl acetate, acetaldehyde and acetic acid). In some locations, acetylene is also used to produce vinyl chloride, the raw material for the production of PVC.
A less important use of Calcium Carbide is related to the ferilizers industry. It reacts with nitrogen to form calcium cyanamide, which is the starting material for the production of cyanamide (CH2N2). Cyanamide is a common agricultural product used to stimulate early foliation.
Calcium Carbide can also be employed as desulfurizing agent for producing low-sulfur carbon steel. Also, it is used as a reducing agent to produce metals from their salts, e.g., for direct reduction of copper sulfide to metallic copper. flares. Further, it is involved in the reduction of copper sulfide to metallic copper.


Product detail pictures:

Polymethylmethacrylate Cas 9011-14-7 Calcium Carbide CAS 75-20-7 High Quality And Low Price – Chemwin detail pictures


Related Product Guide:

To meet the customers' over-expected gratification , we have our robust crew to offer our best over-all support which includes marketing, income, coming up with, production, excellent managing, packing, warehousing and logistics for Polymethylmethacrylate Cas 9011-14-7 Calcium Carbide CAS 75-20-7 High Quality And Low Price – Chemwin , The product will supply to all over the world, such as: United States, Liberia, Kazakhstan, We accomplish this by exporting our wigs directly from our own factory to you. The goal of our company is to get customers who enjoy coming back to their business. We sincerely hope to cooperate with you in the near future. If there's any opportunity, welcome to visit our factory!!!
  • We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By Roxanne from Mali - 2018.05.15 10:52
    Problems can be quickly and effectively resolved, it is worth to be trust and working together.
    5 Stars By Kelly from Ecuador - 2018.06.09 12:42
    Write your message here and send it to us