Lanthanum (HCID 23926)

概要

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

名称と識別子

優先名称: Lanthanum
IUPAC: lanthanum
英語名: Lanthanum
分子式: La
分子量: 0

名称と別名

LANTHANUM7439-91-0LADTXSID0064676CHEBI:333366I3K30563SLanthanum MetallicumRefChem:55452DTXCID8047638231-099-0lantanolanthane

名称をさらに表示

Lanthanlanthanum atomLanthanum ingotlanthanum(2+)MFCD0001106657LaLanthanum, (ingot)Lanthanum ion(2 )

データベース識別子

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

物性

構造計算による物性

極性表面積: 0 Å²
水素結合供与体数: 0
水素結合受容体数: 0
回転可能結合数: 0
重原子数: 1
形式電荷: 0
複雑度: 0

実験および物理化学的性質

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 件

Other Solid

White, malleable metal that oxidizes in air; [Merck Index]

Liquid

安全と法規制

GHS分類

GHS Classification · 5 件

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.

危険有害性情報

Regulatory Information · 4 件

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 件

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%)

安全と保護具

Protective Action Criteria (PAC) · 3 件

30 [mg/m3]

330 [mg/m3]

2000 [mg/m3]

毒性情報

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

RAIS Toxicity Values · 4 件

5e-05

PPRTV Current

5e-05

PPRTV Current

EPA Provisional Peer-Reviewed Toxicity Values · 6 件

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 件

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 件

1.20e+01

1.80e+02

3.00e+00

5.00e+01

5e-05

Volatile

安全データ

注意喚起語: 危険
危険有害性情報: コード危険有害性情報危険有害性クラス区分注意喚起語シンボル P コード H228

化学と産業

用途と製造

Uses · 2 件

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 件

Fabricated Metal Product Manufacturing

Lanthanum: ACTIVE