Lanthanoxyd
Lanthanum sesquioxide
Grundinformationen
- CAS
1312-81-8- Standard-SMILES
[La+3].[La+3].[O-2].[O-2].[O-2]- InChIKey
MRELNEQAGSRDBK-UHFFFAOYSA-N- Summenformel
- La2O3
- Durchschnittliche Molmasse
- 325,809 g/mol
- Monoisotopische Masse
- 325,79747
Namen und Bezeichner
- Bevorzugter Name
- Lanthanum sesquioxide
- IUPAC
- bis(lanthanum(3+));tris(oxygen(2-))
- Lokaler Name
- Lanthanoxyd
- Englischer Name
- Lanthanum oxide
- Summenformel
- La2O3
- Molmasse
- 325.81
Namen und Synonyme
Lanthanum oxide1312-81-8LanthanaLanthanum sesquioxideLanthanum oxide (La2O3)Dilanthanum trioxideDilanthanum oxideLanthanum(3+) oxideLanthanum trioxideLanthania (La2O3)4QI5EL790WLa(2)O(3)
Weitere Namen anzeigen
Lanthanum(Ⅲ) oxideLANTHANUM OXIDE, 99.99%LANTHANUM OXIDE, 99.99%LANTHANUM OXIDE, 99.99%LANTHANUM OXIDE, 99.99%O3La2lathanialanthaniaLanthanoxidLanthan oxide99.999% (REO)
RefChem:152325DTXCID4030209215-200-5682-684-6DTXSID7051478Lanthanum(III) oxideLanthanum(III)OxideLa2O3
Datenbank-Bezeichner
- CAS
1312-81-8- PubChem CID
- 150906
- UNII
- 4QI5EL790W
- EC Number
- 215-200-5、682-684-6
Eigenschaften
Berechnete Struktureigenschaften
- Polarare Oberfläche (TPSA)
- 3 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 3
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 5
- Formalladung
- 0
- Komplexität
- 0
Experimentelle und physikochemische Eigenschaften
Chemical ClassesMetals -> Rare Earth Metals
SpringerMaterials Propertiesdielectric constant
Density6.51 @25 °C
Boiling Point3620 °C @760 [mm Hg]
Melting Point2304 °C
Physical Description
Other Solid; Dry Powder; Large Crystals
White solid; Insoluble in water; [Merck Index] Soluble in acids; [Hawley]
Physikochemische Eigenschaften
- Schmelzpunkt
- 2315 °C · 2315 °C
- Siedepunkt
- 4200 °C · 4200 °C
- Dichte
- 6.51 g/mL · 6.51 g/mL at 25 °C(lit.)
- Flammpunkt
- 4200 °C · 4200°C
- storage temp.
- no restrictions.
- Löslichkeit
- 2 O; · insoluble in H2O; soluble in dilute acid solutions
Sicherheit und Regulatorisches
Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.
GHS-Klassifizierung
GHS Classification
This chemical does not meet GHS hazard criteria for 59.9% (370 of 618) of all reports.
Warning
H315 (39.5%): Causes skin irritation [Warning Skin corrosion/irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 618 reports by companies from 15 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Not Classified
Gefahrenhinweise
Regulatory Information
Chemical: Lanthanum oxide (La2O3)
Lanthanum oxide (La2O3) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Lanthanum oxide (La2O3) 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)
REACH registered substance: Lanthanum oxide (EC: 215-200-5)
Lanthanum oxide (La2O3): Does not have an individual approval but may be used under an appropriate group standard
Hazards SummarySee Lanthanum. See RARE EARTH METALS and linked occupational diseases.
Hazard Classes and Categories
Skin Irrit. 2 (39.5%)
Not Classified
Sicherheit und Schutzausrüstung
Protective Action Criteria (PAC)
30 [mg/m3]
Chemie und Industrie
Verwendung und Herstellung
Uses
Used in calcium lights, optical glass, ceramics, carbon-arc electrodes, phosphors, and refractories; [Hawley]
Glass Manufacturing [Category: Industry]
U.S. Production2023: 40,000,000 - <55,000,000 lb
Consumer UsesCatalyst
Industry UsesCatalyst
General Manufacturing Information
All Other Chemical Product and Preparation Manufacturing
Lanthanum oxide (La2O3): ACTIVE
Anwendungen
VerwendenLanthanum oxide is used to make high-quality glass, ceramics, carbon-arc electrodes, and fluorescent lamps. Lanthanum (III) oxide was used as an analytical standard in inductively coupled plasma atomic emission spectrometry (ICP-AES) for chemical characterization of ancient pottery.
Darstellung
synthetischeLanthanum oxide can be produced by direct combustion of lanthanum in oxygen or air. The oxide also may be prepared by decomposition of an oxo salt of lanthanum, such as nitrate, sulfate, carbonate, hydroxide or oxalate. La(CO3)3•8H2O → La2O3 + 3CO2 + 8H2O 2La2(C2O4)3•9H2O + 3O2 → 2La2O3 + 12CO2 + 18H2O
Vor- und nachgelagerte Produkte
Vorgelagerte Rohstoffe
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