Lanthanum Elemental Symbol

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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 and its Van der Waals radius is 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.

  • Properties
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  • Isotopes
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Lanthanum 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
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

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(tetramethylcyclopentadienyl) lanthanum(III)


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

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 Strontium Gallate Magnesite
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 Gallium Oxide
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
YLaSc Crystal, Nonlinear


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

  • Morteza Hadi, Mahmood Meratian, Ali Shafyei, The effect of lanthanum on the microstructure and high temperature mechanical properties of a beta-solidifying TiAl alloy, Journal of Alloys and Compounds, Volume 618, 5 January 2015
  • Stefan Kuhn, Andreas Herrmann, Christian Rüssel, Judd–Ofelt analysis of Sm3+-doped lanthanum-aluminosilicate glasses, Journal of Luminescence, Volume 157, January 2015
  • Fan Yang, Yanfei Wang, Xiaofeng Zhao, Ping Xiao, Enhanced ionic conductivity in pyrochlore and fluorite mixed phase yttrium-doped lanthanum zirconate, Journal of Power Sources, Volume 273, 1 January 2015
  • Xiaolong Chen, Xueqiang Cao, Binglin Zou, Jun Gong, Chao Sun, High-temperature corrosion behaviour of plasma sprayed lanthanum magnesium hexaluminate coating by vanadium oxide, Journal of the European Ceramic Society, Volume 35, Issue 1, January 2015
  • Pritty Rao, Sanjiv Kumar, R.B. Tokas, N.K. Sahoo, A probe into compositional and structural dependence of optical properties of lanthanum fluoride films prepared by resistive heating, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Volume 342, 1 January 2015
  • Jie Xie, Yan Lin, Chunjie Li, Deyi Wu, Hainan Kong, Removal and recovery of phosphate from water by activated aluminum oxide and lanthanum oxide, Powder Technology, Volume 269, January 2015
  • Pengrong Ren, Huiqing Fan, Xin Wang, Dong Guangzhi, Phase transition, high figure of merit and polar nano-regions in dielectric tunable lanthanum substituted barium titanate, Journal of Alloys and Compounds, Volume 617, 25 December 2014
  • Ding Rong Ou, Mojie Cheng, Stability of manganese-oxide-modified lanthanum strontium cobaltite in the presence of chromia, Journal of Power Sources, Volume 272, 25 December 2014
  • Chao Zhang, Zhi-Jian Li, Hong Jiang, Xue-Ning Hu, Guo-Hua Zhong, Yue-Hua Su, Thermodynamic and mechanical properties of actinium and lanthanum dihydride, Journal of Alloys and Compounds, Volume 616, 15 December 2014
  • Caroline Cássia Alves, Julien Demoucron, Bruno Caillier, Philippe Guillot, Robert Mauricot, Jeannette Dexpert-Ghys, José Maurício Almeida Caiut, Amino acid coupled to Pr3+ doped lanthanum orthophosphate (LaPO4) nanoparticles, Materials Letters, Volume 137, 15 December 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+