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Rare earth compounds

Lanthanum

Also known as LA, Lanthanum Metallicum, lantano

CAS 7439-91-0Formula LaMolar mass 138.91 g/molEC 231-099-0
GHS signal word: Danger. Pictograms: Flammable 37 suppliers listed Drug substance
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
Physical form
Solid
Melting point
920 °C
Boiling point
3,464 °C
Density
6.166 @25 °C
HS code
280530
Category
Rare earth compounds
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Lanthanum?

Plain description, key identifiers and synonyms

Lanthanum(2+) is a lanthanum cation, a monoatomic dication, a lanthanum molecular entity and a divalent metal cation.

Lanthanum is a chemical element with symbol La and atomic number 57.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
lanthanum
CAS number
7439-91-0 CAS number cross-checkedOther or deprecated CAS: 13864-01-2
EC number
231-099-0
Molecular formula
La
UNII
6I3K30563S
MDL number
MFCD00011066
InChIKey
FZLIPJUXYLNCLC-UHFFFAOYSA-N
InChI
InChI=1S/La
SMILES (canonical and isomeric)
[La]

Synonyms

  • LA
  • Lanthanum Metallicum
  • lantano
  • lanthane
  • Lanthan
  • lanthanum atom
  • Lanthanum ingot
  • lanthanum(2+)
  • 57La
  • Lanthanum, (ingot)
  • Lanthanum ion(2 )
  • Contains 1% La (from lanthanum oxide) in 2% HCl
  • Lanthanum - La @ 1000 microg/g in Hydrocarbon Oil
  • Lanthanum, ion (La2 )
  • Lanthanum Standard: La @ 1000 microg/mL in 5% HNO3
  • Lanthanum Standard: La @ 10000 microg/mL in 5% HNO3
  • Lanthanum Standard: La @ 5000 microg/g in Hydrocarbon Oil
  • lanthanum metal
  • Lanthanum pieces
  • Atomic Lanthanum
  • Element-La
  • Element:La
  • Lanthanum element
  • Element Lanthanum
  • Element:Lanthanum
Show all 36 synonyms
  • Lanthanum, pieces
  • La (element)
  • Lanthanum (atomic)
  • Lanthanum (element)
  • lanthanum(2+) ion
  • La Standard Solution
  • Lanthanum foil, 3N
  • lanthanum(II) cation
  • Lanthanum powder, 3N
  • Lanthanum chips, 2N6
  • Lanthanum, 99.9%

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Solidexp.
Melting point
920 °Cexp.
Boiling point
3,464 °Cexp.
Density
6.166 @25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
138.91 g/molcalc.
Exact mass
138.9064 Dacalc.
LogP (octanol/water)
0calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable

Hazard statements

  • H228Flammable solid.
  • H260In contact with water releases flammable gases which may ignite spontaneously.
Precautionary statements (10)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P223Do not allow contact with water.
  • P231 + P232Handle and store contents under inert gas. Protect from moisture.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P402 + P404Store in a dry place. Store in a closed container.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Lanthanum suppliers

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All 37 suppliers
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Where suppliers are based

37 suppliers in 8 countries

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Lanthanum price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Intermediate, Alloys.

Consumer uses: Intermediate.

Pharmacology

Lanthanum is a silvery white metallic element that belongs to period 6 of the lanthanoids family, with phosphate binding property. Lanthanum, when administered in a salt form, dissociates in acid to release lanthanum ions, which then bind dietary phosphate. This agent inhibits the absorption of phosphate by forming highly insoluble lanthanum-phosphate complexes that reduce concentrations of serum phosphate and calcium phosphate.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Lanthanum is traded under.

HS 2805.30Indicative HS code

Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed

World exports in 2024
$385M
+7.4% vs 2023, imports $503M
2019 to 2024
Top exporters
  1. Vietnam * partner reported50.6%
  2. China24.9%
  3. Thailand17.1%
Top importers
  1. Japan49.0%
  2. Malaysia25.5%
  3. Vietnam * partner reported8.2%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Lanthanum is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Lanthanum, based on the data on this page

What is Lanthanum?

Lanthanum(2+) is a lanthanum cation, a monoatomic dication, a lanthanum molecular entity and a divalent metal cation.

What is the CAS number of Lanthanum?

The CAS registry number of Lanthanum is 7439-91-0. Other or deprecated CAS numbers: 13864-01-2.

What is the molecular formula and weight of Lanthanum?

The molecular formula of Lanthanum is La and its molar mass is 138.91 g/mol.

What is Lanthanum used for?

Industrial uses: Intermediate, Alloys. Consumer uses: Intermediate.

Is Lanthanum hazardous?

Lanthanum carries the GHS signal word "Danger". Main hazards: flammable solid, in contact with water releases flammable gases which may ignite spontaneously. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Lanthanum?

Lanthanum is usually classified under HS code 280530 (Rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Lanthanum?

CompoundList lists 37 suppliers of Lanthanum in United States, China, Germany, Spain and 4 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Lanthanum in India?

1 supplier in India list Lanthanum on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Lanthanum?

Suppliers quote Lanthanum on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Lanthanum

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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