Lanthanum Elemental Symbol
Lanthanum



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Lanthane Lanthan Lantanio Lantânio Lantano Lantan

Lanthanum(La) atomic and molecular weight, atomic number and elemental symbol Lanthanum is a Block F, Group 3, Period 6 element. The number of electrons in each of lanthanum's shells is 2, 8, 18, 18, 9, 2 and its electron configuration is [Xe] 5d1 6s2. The lanthanum atom has a radius of 187.pm and its Van der Waals radius is 240.pm. Lanthanum Bohr ModelIn its elemental form, CAS 7439-91-0, lanthanum has a silvery white appearance. Lanthanum is the first element in the rare earth or lanthanide series. It is the model for all the other trivalent rare earths and it is the second most abundant of the rare earths after cerium. Lantahanum is found in monazite and bastnasite. Lanthanum was first discovered by Carl Mosander in 1838. The name lanthanum originates from the Greek word Lanthaneia which means 'to lie hidden'.

Elemental Lanthanum

Lanthanum-rich lanthanide compositions have been used extensively for cracking reactions in FCC catalysts, especially to manufacture low-octane fuel for heavy crude oil. It is utilized in green phosphors based on the aluminate (La0.4Ce0.45Tb0.15)PO4. Lanthanide zirconates and lanthanum strontium manganites are used for their catalytic and conductivity properties and lanthanum stabilized zirconia has useful electrical and mechanical properties. Lanthanum's ability to bind with phosphates in water creates numerous uses in water treatment. It is utilized in laser crystals based on the yttrium-lanthanum-fluoride (YLF) composition. Lanthanum metal is predominantly used in the production of mischmetal and steel additives but is also important in the production of hydrogen storage alloys for nickel-metal hydride (NiMH) batteries. High Purity (99.999%) Lanthanum Oxide (La2O3) PowderLanthanum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity).Elemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes. High Purity (99.999%) Lanthanum (La) Sputtering TargetLanthanum nanoparticles and nanopowders provide ultra-high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits. Oxides are available in powder and dense pellet form for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Lanthanum is also available in soluble forms including chlorides, nitrates and acetates. These compounds can be manufactured as solutions at specified stoichiometries.

Lanthanum is somewhat toxic. Safety data for Lanthanum and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the Products tab below.


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Lanthanum Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: La Melting Point: 920 oC, 1688 oF, 1193.15 K
Atomic Number: 57 Boiling Point: 3464 oC, 6267.2 oF, 3737.15 K
Atomic Weight: 138.90547 Density: 6174 kg m-3
Element Category: lanthanide Liquid Density @ Melting Point: 5.94 g·cm−3
Group, Period, Block: n/a, 6, f Specific Heat: 0.195 kJ/kg K
    Heat of Vaporization 96 K-Cal/gm atom at 3457 °C
CHEMICAL STRUCTURE Heat of Fusion 2.40 Cal/gm mole
Electrons: 57 Thermal Conductivity: 0.134 W/cm/K @ 298.2 K
Protons: 57 Thermal Expansion: (r.t.) (α, poly) 12.1 µm/(m·K)
Neutrons: 82 Electrical Resistivity: 5.70 microhm-cm @ 25°C
Electron Configuration: [Xe] 5d16s2 Electronegativity: 1.1 Paulings
Atomic Radius: 187 pm Tensile Strength: N/A
Covalent Radius: 207±8 pm Molar Heat Capacity: 27.11 J·mol−1·K−1
Van der Waals radius: 240 pm Young's Modulus: (α form) 36.6 GPa
Oxidation States: 3, 2 (strongly basic oxide) Shear Modulus: (α form) 14.3 GPa
Phase: Solid Bulk Modulus: (α form) 27.9 GPa
Crystal Structure: Hexagonal Poisson Ratio: (α form) 0.280
Magnetic Ordering: paramagnetic Mohs Hardness: 2.5
1st Ionization Energy: 538 kJ·mol−1 Vickers Hardness: 491 MPa
2nd Ionization Energy: 1067 kJ·mol−1 Brinell Hardness: 363 MPa
3rd Ionization Energy: 1850 kJ·mol−1 Speed of Sound: (20 °C) 2475 m·s−1
       
IDENTIFIERS   MISCELLANEOUS  
CAS Number: 7439-91-0 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22369 Abundance in typical human body, by atom: N/A
PubChem CID: 23926 Abundance in universe, by weight: 2 ppb
MDL Number: MFCD00011066 Abundance in universe, by atom: 0.02 ppb
EC Number: 231-099-0 Discovered By: Carl Gustaf Mosander
Beilstein Number: N/A Discovery Date: 1838
SMILES Identifier: [La]  
InChI Identifier: InChI=1S/La Other Names: Lanthane, Lantanio, Lantânio
InChI Key: FZLIPJUXYLNCLC-UHFFFAOYSA-N  
       
       
       
       
       

Lanthanum Products

Metal Forms  •  Compounds  •  Alloys  •  Oxide Forms  •  Organometallic Compounds
Sputtering Targets  •  Nanomaterials  •  Semiconductor Materials

Metal Forms

Lanthanum Balls
Lanthanum Bands
Lanthanum Bars
Lanthanum Bits
Lanthanum Board
Lanthanum Briquette
Lanthanum Capsules
Lanthanum Chunk
Lanthanum Circle
Lanthanum Coil
Lanthanum Coin
Lanthanum Concentrate
Lanthanum Cylinder
Lanthanum Disc
Lanthanum Dust
Lanthanum Flake
Lanthanum Flanges
Lanthanum Foil
Lanthanum Fragments
Lanthanum Grain
Lanthanum Granules
Lanthanum Ingot
Lanthanum Lump
Lanthanum Mesh
Lanthanum Metal
Lanthanum Microfoil
Lanthanum Microleaf
Lanthanum Nugget
Lanthanum Parts
Lanthanum Particles
Lanthanum Pebbles
Lanthanum Pellets
Lanthanum Pieces
Lanthanum Pills
Lanthanum Plates
Lanthanum Powder
Lanthanum Precipitate
Lanthanum Prism
Lanthanum Puck
Lanthanum Residue
Lanthanum Ribbon
Lanthanum Rings
Lanthanum Rocks
Lanthanum Rod
Lanthanum Samples
Lanthanum Scraps
Lanthanum Segments
Lanthanum Shaving
Lanthanum Sheets
Lanthanum Shot
Lanthanum Sleeves
Lanthanum Slugs
Lanthanum Specimens
Lanthanum Spheres
Lanthanum Spring
Lanthanum Strip
Lanthanum Tape
Lanthanum Tube
Lanthanum Wafer
Lanthanum Wire
Ultra Thin Lanthanum Foil


Organometallic Compounds

Aluminum Lanthanum Isopropoxide
Di-[3-((R)-2,2'-dihydroxy-1,1'-binapthylmethyl)]ether, lanthanum(III) salt, tetrahydrofuran adduct, SCT-(R)-BINOL
Lanthanum 2-Ethylhexanoate
Lanthanum Acetylacetonate
Lanthanum(III) Ethoxide
Lanthanum Isopropoxide
Lanthanum(III) 2-Methoxyethoxide
Lanthanum Oxalate
Lanthanum Oxalate Hydrate
Lanthanum Trifluoromethanesulfonate
Lanthanum(III) Trifluoromethanesulfonate Hydrate
Soln Tris(1-methoxy-2-methyl-2-propoxy)lanthanum tetraglyme adduct
Tris(2,2,6,6-tetramethylheptane-3,5-dionato)lanthanum
Tris(cyclopentadienyl)lanthanum
Tris(tetramethylcyclopentadienyl) lanthanum(III)
Tris[N,N-bis(trimethylsilyl)amide]lanthanum(III)


Nanomaterials

Lanthanum Hexaboride Nanoparticles
Lanthanum Nanoparticles
Lanthanum Nanoprisms
Lanthanum Oxide Nanopowder
Lanthanum Strontium Manganite Nanopowder
Lanthanum Trifluoride Nanoparticles
Compounds

Calcium Doped Lanthanum Chromite
Calcium Doped Lanthanum Chromite Paste
Cesium Chloride Lanthanum Chloride Buffer Solution
Langasite - Lanthanum Gallium Silicate (LGS)
Lanthanum Acetate
Lanthanum Acetate Solution
Lanthanum Aluminate
Lanthanum Aluminum Oxide
Lanthanum Aluminide
Lanthanum Borate
Lanthanum Boride
Lanthanum Bromide
Lanthanum Bromide, Ultra Dry
Lanthanum(III) Bromide Hydrate
Lanthanum Calcium Borate
Lanthanum Calcium Manganite (LCM)
Lanthanum Carbide
Lanthanum Carbide Powder
Lanthanum Carbonate
Lanthanum Chloride
Lanthanum Chloride Solution
Lanthanum Chloride, Ultra Dry
Lanthanum(III) Chloride Heptahydrate
Lanthanum(III) Chloride Hydrate
Lanthanum Fluoride
Lanthanum Fluoride Granules
Lanthanum Fluoride Pieces
Lanthanum Hexaboride
Lanthanum Hydride
Lanthanum Hydroxide
Lanthanum Iodate
Lanthanum Iodide
Lanthanum Iodide, Ultra Dry
Lanthanum Metaborate
Lanthanum Nickel Hydride
Lanthanum Nickelate Nanopowder
Lanthanum Nickelate, Strontium Doped
Lanthanum Nitrate
Lanthanum Nitrate Solution
Lanthanum(III) Nitrate Hexahydrate
Lanthanum(III) Nitrate Hydrate
Lanthanum Nitride
Lanthanum Oxide
Lanthanum(III) Phosphate Hydrate
Lanthanum Strontium Chromite
Lanthanum Strontium Cobalt Chromite
Lanthanum Strontium Cobalt Chromite Paste
Lanthanum Strontium Cobalt Ferrite
Lanthanum Strontium Cobalt Ferrite Paste
Lanthanum Strontium Ferrite
Lanthanum Gallate, Strontium and Magnesium-Doped
Lanthanum Strontium Manganite - Gadolinium Doped Ceria (LSM20-GDC10)
Lanthanum Strontium Manganite Paste
Lanthanum Strontium Manganite - Yttrium Stabilized Zirconia (LSM-YSZ)
Lanthanum Strontium Manganite/Zirconia Paste
Lanthanum Sulfate
Lanthanum Sulfate Solution
Lanthanum(III) Sulfate Hydrate
Lanthanum Titanate
Lanthanum Titanium Oxide
Lanthanum-rich Lanthanide Chloride and Nitrate
Lanthanum Ytttrium Germanate
Strontium Lanthanum Sulfide


Oxide Forms

Lanthanum Oxide Nanopowder
Lanthanum Oxide Pellets
Lanthanum Oxide Pieces
Lanthanum Oxide Powder
Lanthanum Oxide Rotatable Sputtering Target
Lanthanum Oxide Shot
Lanthanum Oxide Tablets
Lanthanum Oxide Sputtering Target


Crystal/ Semiconductor Materials

Eu-doped Lanthanum Fluoride Single Crystal
Gallium Lanthanum Sulfide
Lanthanum Aluminum Oxide Single Crystal Substrate
Lanthanum Arsenide
Lanthanum Germanate
Lanthanum Iron Oxide
Lanthanum Phosphide
Lanthanum Selenide
Lanthanum Silicide
Lanthanum Strontium Manganite
Lanthanum Sulfide
Lanthanum Telluride
LSAT Single Crystral Substrate
Strontium Lanthanum Aluminate
Strontium Lanthanum Aluminum Oxide
Crystal/ Semiconductor Materials

Strontium Lanthanum Gallium Oxide
YLaSc Crystal, Nonlinear


Alloys

Aluminum Transition Lanthanides Alloy Powder
Lanthanated Moly Balls
Lanthanated Moly Bands
Lanthanated Moly Bars
Lanthanated Moly Bits
Lanthanated Moly Board
Lanthanated Moly Briquette
Lanthanated Moly Capsules
Lanthanated Moly Circle
Lanthanated Moly Coil
Lanthanated Moly Chunk
Lanthanated Moly Coin
Lanthanated Moly Concentrate
Lanthanated Moly Crucibles
Lanthanated Moly Cylinder
Lanthanated Moly Disc
Lanthanated Moly Dust
Lanthanated Moly Flanges
Lanthanated Moly Foam
Lanthanated Moly Foil
Lanthanated Moly Fragments
Lanthanated Moly Grain
Lanthanated Moly Granules
Lanthanated Moly Honeycomb
Lanthanated Moly Ingot
Lanthanated Moly Lump
Lanthanated Moly Metal
Lanthanated Moly Nugget
Lanthanated Moly Parts
Lanthanated Moly Pebbles
Lanthanated Moly Pellets
Lanthanated Moly Pieces
Lanthanated Moly Pills
Lanthanated Moly Plate
Lanthanated Moly Powder
Lanthanated Moly Precipitate
Lanthanated Moly Puck
Lanthanated Moly Residue
Lanthanated Moly Ribbon
Lanthanated Moly Rocks
Lanthanated Moly Rod
Lanthanated Moly Samples
Lanthanated Moly Scraps
Lanthanated Moly Segments
Lanthanated Moly Shaving
Lanthanated Moly Sheet
Lanthanated Moly Shot
Lanthanated Moly Slugs
Lanthanated Moly Specimens
Lanthanated Moly Spheres
Lanthanated Moly Sponge
Lanthanated Moly Spring
Lanthanated Moly Strip
Lanthanated Moly Tape
Lanthanated Moly Tube
Lanthanated Moly Wafer
Lanthanated Moly Wire
Lanthanated Moly Wool
Lanthanated Tungsten Electrode
Lanthanum Mischmetal
Lanthanum-Neodymium Metal
Lanthanum Nickel
Lanthanum-Nickel-Aluminum Alloy
Lanthanum Nickel Cobalt Alloy
Nickel Lanthanide Alloy Particles
Nickel Lanthanides Alloy Powder


Sputtering Targets

Bismuth Lanthanum Titanium Oxide Sputtering Target
Lanthanated Moly Sputtering Target
Lanthanum Aluminum Oxide Sputtering Target
Lanthanum Aluminum Sputtering Target
Lanthanum Boride Sputtering Target
Lanthanum Fluoride Sputtering Target
Lanthanum Manganate Sputtering Target
Lanthanum Nickel Sputtering Target
Lanthanum Oxide Rotatable Sputtering Target
Lanthanum Oxide Sputtering Target
Lanthanum Phosphide Sputtering Target
Lanthanum Rotatable Sputtering Target
Lanthanum Selenide Sputtering Target
Lanthanum Sputtering Target
Lanthanum Vanadium Oxide Sputtering Target
LSC Sputtering Target
LSCF Sputtering Target
LSF Sputtering Target
LSGM Sputtering Target
Lanthanum Strontium Manganite Sputtering Target
Lanthanum Telluride Sputtering Target
Silver Lanthanum Sputtering Target


Recent Research & Development for Lanthanum

  • Masood A. Nath, Saroj L. Samal, K. Rama Obulesu, K.C. James Raju, Ashok K. Ganguli, Microwave dielectric properties of lanthanum based complex perovskites, Journal of Alloys and Compounds, Volume 615, 5 December 2014
  • Boxun Hu, Manoj K. Mahapatra, Michael Keane, Heng Zhang, Prabhakar Singh, Effect of CO2 on the stability of strontium doped lanthanum manganite cathode, Journal of Power Sources, Volume 268, 5 December 2014
  • Hui Fan, Michael Keane, Prabhakar Singh, Minfang Han, Electrochemical performance and stability of lanthanum strontium cobalt ferrite oxygen electrode with gadolinia doped ceria barrier layer for reversible solid oxide fuel cell, Journal of Power Sources, Volume 268, 5 December 2014
  • Qizhen Duan, Qiuhong Yang, Shenzhou Lu, Cen Jiang, Qing Lu, Bo Lu, Fabrication and properties of Er/Tm/Pr tri-doped yttrium lanthanum oxide transparent ceramics, Journal of Alloys and Compounds, Volume 612, 5 November 2014
  • Guangchao Yin, Hong Yin, Xin Wang, Meiling Sun, Linhong Zhong, Ridong Cong, Hongyang Zhu, Wei Gao, Qiliang Cui, Mg doping effect on high-pressure behaviors of apatite-type lanthanum silicate, Journal of Alloys and Compounds, Volume 611, 25 October 2014
  • Vesna Middelkoop, Hong Chen, Bart Michielsen, Marijke Jacobs, Guttorm Syvertsen-Wiig, Myrjam Mertens, Anita Buekenhoudt, Frans Snijkers, Development and characterisation of dense lanthanum-based perovskite oxygen-separation capillary membranes for high-temperature applications, Journal of Membrane Science, Volume 468, 15 October 2014
  • Xiaoming Liu, Hanzheng Guo, Xiaoli Tan, Evolution of structure and electrical properties with lanthanum content in [(Bi1/2Na1/2)0.95Ba0.05]1-xLaxTiO3 ceramics, Journal of the European Ceramic Society, Volume 34, Issue 12, October 2014
  • Ying Peng Xie, Guo Sheng Wang, Visible light responsive porous Lanthanum-doped Ag3PO4 photocatalyst with high photocatalytic water oxidation activity, Journal of Colloid and Interface Science, Volume 430, 15 September 2014
  • Tae-Sik Oh, Anthony S. Yu, Lawrence Adijanto, Raymond J. Gorte, John M. Vohs, Infiltrated lanthanum strontium chromite anodes for solid oxide fuel cells: Structural and catalytic aspects, Journal of Power Sources, Volume 262, 15 September 2014
  • Anindya Sundar Patra, Natarajan Vinoth Kumar, Dipankar Barpuzary, Mahuya De, Mohammad Qureshi, Strontium doped lanthanum manganites for efficient and robust photocatalytic water oxidation coupled with graphene oxide, Materials Letters, Volume 131, 15 September 2014
  • Pierre Alphonse, Benjamin Faure, Thermal stabilization of alumina modified by lanthanum, Microporous and Mesoporous Materials, Volume 196, 15 September 2014
  • Reza Abazari, Soheila Sanati, Lotf Ali Saghatforoush, A unique and facile preparation of lanthanum ferrite nanoparticles in emulsion nanoreactors: Morphology, structure, and efficient photocatalysis, Materials Science in Semiconductor Processing, Volume 25, September 2014
  • Atma Rai, A.L. Sharma, Awalendra K. Thakur, Evaluation of aluminium doped lanthanum ferrite based electrodes for supercapacitor design, Solid State Ionics, Volume 262, 1 September 2014
  • Wakako Araki, Jürgen Malzbender, Yoshio Arai, Molecular dynamics study on the nature of ferroelasticity and piezoconductivity of lanthanum cobaltite, Solid State Ionics, Volume 262, 1 September 2014
  • Kouta Imaizumi, Kazuaki Toyoura, Atsutomo Nakamura, Katsuyuki Matsunaga, Stable sites and diffusion pathways of interstitial oxide ions in lanthanum germanate, Solid State Ionics, Volume 262, 1 September 2014
  • Atsushi Mineshige, Hiroyuki Mieda, Mitsuaki Manabe, Takahiro Funahashi, Yusuke Daiko, Tetsuo Yazawa, Mina Nishi, Katsuhiko Yamaji, Teruhisa Horita, Koji Amezawa, Keiji Yashiro, Tatsuya Kawada, Hideki Yoshioka, Oxide ion and electron transport properties in lanthanum silicate oxyapatite ceramics, Solid State Ionics, Volume 262, 1 September 2014
  • G. Di Girolamo, F. Marra, C. Blasi, M. Schioppa, G. Pulci, E. Serra, T. Valente, High-temperature mechanical behavior of plasma sprayed lanthanum zirconate coatings, Ceramics International, Volume 40, Issue 7, Part B, August 2014
  • Guicheng Jiang, Xiantao Wei, Shaoshuai Zhou, Yonghu Chen, Changkui Duan, Min Yin, Neodymium doped lanthanum oxysulfide as optical temperature sensors, Journal of Luminescence, Volume 152, August 2014
  • Nan Chen, Yunjuan He, Guoping Du, Preparation and luminescence of europium-doped lanthanum fluoride–benzoic acid hybrid nanostructures, Materials Science in Semiconductor Processing, Volume 24, August 2014
  • A. Igityan, Y. Kafadaryan, N. Aghamalyan, S. Petrosyan, G. Badalyan, R. Hovsepyan, I. Gambaryan, A. Eganyan, H. Semerjian, A. Kuzanyan, Structural and electrical characteristics of lanthanum oxide formed on surface of LaB6 film by annealing, Thin Solid Films, Volume 564, 1 August 2014

Lanthanum Isotopes


Naturally occurring lanthanum (La) has one stable isotope: 139La.

Nuclide Symbol Isotopic Mass Half-Life Nuclear Spin
139La 138.9063533 Stable 7/2+