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Lanthanum (La) Metal

HTRE1172

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Lanthanum (La) Metal is applied in petroleum and environment protection catalysts, mischmetal, polishing powders, and Rare Earth fertilizers. Heeger Materials (HM) provides the best Lanthanum (La) Metal at a competitive price. Specialized and customized services could be available.

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Data sheet

Molecular FormulaLa
Molecular Weight138.91
Purity99.95%/99.9%/99%
CAS7439-91-0
SynonymsLanthanum Metal/ME57-3N5/Lanthan Metall /Metal De Lanthane/Metal Del Lantano

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Lanthanum is a rare earth element with the symbol La and atomic number 57, which has a silvery-white metallic luster at the fracture, easily oxidized in air. HM stocks a wide variety of rare earth materials for use in electronics, petrochemicals, metallurgy, machinery, energy, environmental protection, agriculture, and other fields. We also offer pure metals and compounds for R&D applications.

Lanthanum (La) Metal

  • Phase at STP: solid
  • Melting point: 1193 K (920 °C, 1688 °F)
  • Boiling point: 3737 K (3464 °C, 6267 °F)
  • Density (near r.t.): 6.162 g/cm3
  • Liquid (at m.p.): 5.94 g/cm3
  • The heat of fusion: 6.20 kJ/mol
  • The heat of vaporization: 400 kJ/mol
  • Molar heat capacity: 27.11 J/(mol·K)

Lanthanum (La) Metal Properties

Property

Value/Description

Atomic Number

57

Atomic Weight

138.90547 g/mol

Appearance

Silvery-white, soft, malleable, and ductile metal

Crystal Structure

Hexagonal close-packed (HCP, α-La) at room temperature; transforms to FCC (β-La) at 310°C

Density

6.15 g/cm³ (at 20°C)

Melting Point

920°C

Boiling Point

3464°C

Thermal Conductivity

13.4 W/m·K (at 300 K)

Thermal Expansion Coefficient

12.1×10⁻⁶/°C (at 20°C)

Electrical Resistivity

61.5 µΩ·cm (at 20°C)

Electrical Conductivity

~1.6×10⁶ S/m (at 20°C, ~2.7% IACS compared to copper)

Young’s Modulus

36.6 GPa

Shear Modulus

14.3 GPa

Bulk Modulus

27.9 GPa

Poisson’s Ratio

0.28

Hardness

~37 HV (Vickers Hardness, soft metal); Mohs hardness ~2.5

Oxidation Behavior

Highly reactive; oxidizes rapidly in air, forming La₂O₃; tarnishes in humid air

Corrosion Resistance

Poor; reacts with water (slowly at room temperature, faster when heated)

Specific Heat Capacity

0.195 J/g·K (at 25°C)

Heat of Fusion

6.2 kJ/mol

Heat of Vaporization

402 kJ/mol

Electronegativity

1.1 (Pauling scale)

Ionization Energy

First: 538.1 kJ/mol

Lanthanum (La) Metal Specifications

ME57-3N5

ME57-3N

ME57-2N

Grade

99.95%

99.9%

99%

CHEMICAL COMPOSITION

 

 

 

La/TREM (% min)

99.95

99.9

99

TREM (% min)

99.5

99.5

99

Rear Earth Impurities%

% max.

% max.

% max.

Ce/TREM

Pr/TREM

Nd/TREM

Sm/TREM

Eu/TREM

Gd/TREM

Y/TREM

0.05

0.01

0.01

0.001

0.001

0.001

0.001

0.05

0.05

0.01

0.005

0.005

0.005

0.01

0.1

0.1

0.1

0.1

0.1

0.1

0.1

Non-Rear Earth Impurities

% max.

% max.

% max.

Fe

Si

Ca

Al

Mg

C

Cl

0.1

0.025

0.01

0.05

0.01

0.03

0.01

0.2

0.03

0.02

0.08

0.03

0.05

0.02

0.5

0.05

0.02

0.1

0.05

0.05

0.03

Lanthanum (La) Metal Applications

  • Lanthanum Metal is used as an important raw material in producing Hydrogen Storage Alloys for NiMH batteries and
  • Lanthanum Metal is used to produce other pure rare-earth metals and specialty alloys.
  • Small amounts of Lanthanum added to Steel improve its malleability, resistance to impact, and ductility.
  • Small amounts of Lanthanum are present in many pool products to remove the Phosphates that feed algae.
  • Lanthanum Metal can be further processed into various shapes of ingots, pieces, wires, foils, slabs, rods, discs, and powder.

Lanthanum (La) Metal Storage and Packing

Lanthanum (La) Metal should be kept sealed and stored in a dry place, avoiding moisture and exposure to air for a long time. The small-sized products are packaged in cartons and the large-sized products are packaged in wooden boxes. The package is 100g/bag, 500g/bag, 25kg/box, or as required.

Packing

Where to Buy Platinum (Pt) Crucible in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Lanthanum products including Lanthanum (La) Metal, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We are a specialized supplier of premium-grade metals, alloys, ceramics, powders, and various other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors. 

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