Lanthanoxyd
LANTHANUM(III) OXIDE · Lanthanum(Ⅲ) oxide · LANTHANUM OXIDE, 99.99%LANTHANUM OXIDE, 99.99%LANTHANUM OXIDE, 99.99%LANTHANUM OXIDE, 99.99% · O3La2 · Lanthana · lathania · lanthania · Lanthanoxid
Identifikatoren & physikalische Daten
| CAS No. | 1312-81-8 |
|---|---|
| Summenformel | La2O3 |
| Durchschnittliche Molmasse | 325,809 g/mol |
| SMILES | [La+3].[La+3].[O-2].[O-2].[O-2] |
| InChIKey | MRELNEQAGSRDBK-UHFFFAOYSA-N |
| PubChem CID | 150906 |
| EC No. | 215-200-5 |
| Lokaler Name | Lanthanoxyd |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 3 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 3 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 5 |
| Formalladung | 0 |
| Komplexität | 0 |
| Stoffklassen | Metals -> Rare Earth Metals |
| SpringerMaterials Properties | dielectric constant |
| Dichte | 6.51 @25 °C6.51 g/mL at 25 °C(lit.) |
| Siedepunkt | 3620 °C @760 [mm Hg]4200 °C |
| Schmelzpunkt | 2304 °C2315 °C |
| Physical Description | Other SolidDry PowderLarge CrystalsWhite solidInsoluble in water[Merck Index] Soluble in acids[Hawley] |
| Flammpunkt | 4200°C |
| Lagerbedingungen | no restrictions. |
| Löslichkeit | insoluble in H2Osoluble in dilute acid solutions |
| Aggregatzustand | nanopowder |
| Farbe | White to yellow |
| Wichte | 6.51 |
| pH | 9.0 (50g/l, H2O, 20℃)(slurry) |
| Spezifische Wärmekapazität | Cp(crystal): 0.33 J/(g·K), at 25℃ |
| Merck | 14,5363 |
| Stabilität | Stable. |
| Hauptanwendungen | battery manufacturing |
| InChI | 1S/2La.3O |
| InChIKey | KTUFCUMIWABKDW-UHFFFAOYSA-N |
| SMILES | O=[La]O[La]=O |
| LogP (Verteilungskoeffizient) | 1 at 20℃ |
| CAS Datenbank | 1312-81-8(CAS DataBase Reference) |
| EPA chemische Informationen | Lanthanum oxide (La2O3) (1312-81-8) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 59.9% (370 of 618) of all reports.WarningH315 (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 |
|---|---|
| Regulatorische Informationen | 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)Status: Active Update: 24-01-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15267Lanthanum oxide (La2O3): Does not have an individual approval but may be used under an appropriate group standard |
| Gefahrenübersicht | See Lanthanum. See RARE EARTH METALS and linked occupational diseases. |
| Hazard Classes and Categories | Skin Irrit. 2 (39.5%)Not Classified |
| Protective Action Criteria (PAC) | 30 [mg/m3]330 [mg/m3]2000 [mg/m3] |
| Unerwünschte Wirkungen | Fibrogenic - Inducing tissue injury and fibrosis (scarring). |
| Wassergefährdungsklasse (WGK) | 1 |
| TSCA-Inventar-Status | TSCA listed |
| Zollcode | 28469000 |
| RTECS-Nr. | OE5330000 |
| R-Sätze (R) | 36/37/38-36 |
| Toxizität |
Anwendungen & Verwendung
Verwenden
Lanthanum 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.
Herstellung & Synthese
synthetische
Lanthanum 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