Lanthanum
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Basic information
- CAS
13864-01-2- Standard SMILES
[La]- InChIKey
FZLIPJUXYLNCLC-UHFFFAOYSA-N- Molecular formula
- La
- Average molar mass
- 138.9055 g/mol
- Monoisotopic mass
- 138.9063533
Overview
Lanthanum(2+) is a lanthanum cation, a monoatomic dication, a lanthanum molecular entity and a divalent metal cation.
Names & identifiers
- Preferred name
- Lanthanum
- IUPAC
- lanthanum
- English name
- Lanthanum
- Molecular formula
- La
- Molecular weight
- 0
Names & synonyms
LANTHANUM7439-91-0LADTXSID0064676CHEBI:333366I3K30563SLanthanum MetallicumRefChem:55452DTXCID8047638231-099-0lantanolanthane
Show more names
Lanthanlanthanum atomLanthanum ingotlanthanum(2+)MFCD0001106657LaLanthanum, (ingot)Lanthanum ion(2 )
Database identifiers
- CAS
13864-01-2、17643-88-8、7439-91-0- PubChem CID
- 23926
- DTXSID
DTXSID0064676- ChEBI
CHEBI:37317- UNII
- 6I3K30563S
- EC Number
- 231-099-0
- Nikkaji
- J95.807G、J96.333J
Properties
Computed structural propertiesFilling in
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 0
- Rotatable bonds
- 0
- Heavy atoms
- 1
- Formal charge
- 0
- Complexity
- 0
Experimental & physicochemical properties
Chemical ClassesMetals -> Rare Earth Metals
SpringerMaterials Propertieselectron density of states
Density6.166 @25 °C
Boiling Point3464 °C @760 [mm Hg]
Melting Point920 °C
Physical Description
Other Solid
White, malleable metal that oxidizes in air; [Merck Index]
Liquid
Physicochemical properties
- Symbol(GHS)
- 2 · GHS02
- Signal word
- Danger
- Hazard statements
- 228 · H228
- Precautionary statements
- 210 · P210-P240-P241-P280-P370+P378
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 58.9% (146 of 248) of all reports.
Danger
H228 (23.4%): Flammable solid [Danger Flammable solids]
P210, P223, P231+P232, P240, P241, P280, P302+P335+P334, P370+P378, P402+P404, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 248 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Regulatory Information
Chemical: Lanthanum
Lanthanum is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Lanthanum are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 23-03-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/5925
Lanthanum: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Hazards Summary
Low to moderate acute toxicity rating; [Reference #1] A printer and a movie projectionist exposed to rare earth metals in dusts of cored carbon arc lamps retained lanthanum in their lungs. Side effects (not dose dependent) of the drug lanthanum carbonate include diarrhea, vomiting, and abdominal pain. No liver toxicity has been reported. [Nordberg, p. 906-7] See RARE EARTH METALS and linked occupational diseases.
Hazard Classes and CategoriesFlam. Sol. 1 (23.4%)
Safety & protection
Chemistry & industry
Uses & manufacturing
Uses
Used as a calcium antagonist in biology research; Used in optical glass; [ChemIDplus] Natural isotopes are stable La-139 (99.9%) and radioactive La-138 (0.09%); Derived from the minerals monazite, bastnaesite, and cerite; [Merck Index] Used to make carbon lighting, alkali-resistant glass, optical glass, and nodular caste iron; [Reference #1] Used in special optical glasses (infra-red-absorbing glass, camera and telescope lenses) and in small amounts to improve malleability of steel; Also used as catalysts (cracking in petroleum refining and automotive catalytic converters), in nickel-metal-hydride rechargeable batteries, and in water treatment; Lanthanum carbonate is used as a drug to reduce serum phosphate levels in patients with kidney failure; [Nordberg, p. 903]
Metal Preparation and Pouring [Category: Foundry]
U.S. Production2023: 75,000 - <500,000 lb
Consumer UsesIntermediate
Industry UsesIntermediate
General Manufacturing Information
Fabricated Metal Product Manufacturing
Lanthanum: ACTIVE
Related reactions
14 records
Compound notes
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