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Lanthanum (La)
Lanthanum, the first light-group rare-earthelement (LREE) was discovered hidden inside a cerium compound by a relentlesschemical sleuth who spent over a year on the trail. As the first element of thelanthanide group it has no f-electrons, but as f-electrons are added to each subsequent lanthanide the ionic radii of the elements decrease in a progression called lanthanide contraction. The radii decrease from **3 picometers for La3+ to *6.1 picometers for Lu3+.
Lanthanum is a silvery-gray metal that oxidizes readily in air. Finely divided lanthanum metal powder can ignite spontaneously in air. The metal is ductile and malleable and soft enough to be cut with a knife. Dependant on temperature, the metal occurs in three crystal systems. At ambient temperatures, lanthanum occurs in hexagonal form with aspecific gravity of 6.**4 g/cm3, above **0 °C it occurs in face-centered cubicform with a specific gravity of 6.**6 g/cm3, and above **8 °C it occurs inbody-centered cubic form with a specific gravity of 5.*8 g/cm3. It has a melting point of **8 °C, and a boiling point of ***4 °C. Lanthanum oxide, or lanthana, occurs as a sesquioxide with the formula La2O3. The oxide is a white powder with a specific gravity of 3.*6 gm/cm3, a melting point of ***0 °C, and a formula weight of **5.*2.
Lanthanum is a key component in batteries for hybrid vehicles, computers, and electronic devices. Â Its physical and chemical properties enable the elements used in a variety of other products. Â Lanthanum is utilized in hydrogen fuel storage cells, special optical glasses, electronic vacuums, carbon lighting applications, as doping agents in camera and telescope lenses, and in polishing glass and gemstones. Â It also has major applications in petroleum cracking, and as an alloy for many different metals.
Purity of our lanthanum metal:La/TREM = *9% - *9.***9% min
Packing: In iron drums with inner double PVC bags of **0kg net each, or packed according to customers' specifications.
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Product Group : | rare earths |