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Europium is one of the most reactive rare earth metals. In air, the shiny silvery metal starts immediately. At temperatures above 150 ° C it ignites and burns with red flame to the sesquioxide Eu2O3. In water, it reacts with evolution of hydrogen to the hydroxide. With a density of 5,244 g / cm3 Europium is the lightest heavy metal, the next-ever lighter titanium (4,507 g / cm3) is already one of the light metals.
Europium is mainly used in color picture tubes and in semiconductor technology. The addition of small amounts of europium changes the properties of raw materials.
Chris Huang
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chris@hbnewmaterial.com