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The Main Chemical Properties Of Aluminum

wallpapers Industry 2021-01-22
Aluminum is a silver-white light metal. There is malleability. Commodities are often made into rods, sheets, foils, powders, ribbons and filaments. It can form an oxide film to prevent metal corrosion in humid air. Aluminum powder and aluminum foil can burn violently when heated in the air and emit a dazzling white flame.
 
Main chemical properties
 
Aluminum is a lively metal. A dense oxide film with a thickness of about 50 angstroms is immediately formed on the surface of aluminum in dry air, so that the aluminum will not be further oxidized and can withstand water; but aluminum powder mixed with air is very easy to burn; molten aluminum can interact with Water reacts violently; many metal oxides can be reduced to corresponding metals at high temperatures; aluminum is amphoteric, that is, it is soluble in strong alkalis or dilute acids.
 
Basic introduction
 
Regulatory information
 
Aluminum powder is easy to make and explode. This product is controlled by the public security department according to the "Regulations on the Safety Management of Dangerous Chemicals".
 
Use
 
Deoxidizer, reducing agent, organic synthesis, alloy manufacturing.
 
Safety measures
 
Store in a cool, dry place, away from fire and heat; sealed package, do not get wet to prevent damage. Ingestion, drink warm water, induce vomiting. Extinguishing: appropriate dry sand and stone powder.
 
Brief History
 
Analysis of a peculiar metal decoration found in the tomb of Zhou Chu, a 3rd century Chinese military leader, found that it contained 85% aluminum. How it came about is still an unsolved mystery. At the end of the 18th century, alumina was found to contain a metal, but it was not extracted from it. Humphry Davy used electric current to extract sodium and potassium from what they called "soil" (oxides), but he could not extract aluminum in the same way. The first person to take it out was Hans Christian Oersted of Copenhagen (the capital of Denmark) in 1827, and used sodium instead of potassium to obtain pure aluminum for the first time.

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