Lanthanum (HCID 23926)

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 properties

Topological polar surface area: 0 Å²
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 · 3 items

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

GHS classification

GHS Classification · 5 items

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 · 4 items

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 · 1 item

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

Protective Action Criteria (PAC) · 3 items

30 [mg/m3]

330 [mg/m3]

2000 [mg/m3]

Toxicology

Adverse EffectsFibrogenic - Inducing tissue injury and fibrosis (scarring).

RAIS Toxicity Values · 4 items

5e-05

PPRTV Current

5e-05

PPRTV Current

EPA Provisional Peer-Reviewed Toxicity Values · 6 items

Lanthanum

5 x 10^-5 mg/kg-day

PDF Document

Inadequate information to assess carcinogenic potential

2018

Hazard Quotient Level 0.1 or Cancer Risk Level 1E-06 · 6 items

3.90e+00

5.80e+01

1.00e+00

5.00e+01

5e-05

Volatile

Hazard Quotient Level 3 or Cancer Risk Level 1E-04 · 6 items

1.20e+01

1.80e+02

3.00e+00

5.00e+01

5e-05

Volatile

Safety data

Signal word: Danger
Symbol(GHS): GHS02
Hazard statements: H228
Precautionary statements: P210-P240-P241-P280-P370+P378

Chemistry & industry

Uses & manufacturing

Uses · 2 items

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 · 2 items

Fabricated Metal Product Manufacturing

Lanthanum: ACTIVE