Cerdioxyd
CeO2 · Cerium(IV) oxide · Ceria · CERIUM HYDROXIDE · CERIUM (IV) HYDROXIDE · anti-bacterial agents · Cerium Oxide Polishing Powder · Cerium oxide nanoparticle
Identifikatoren & physikalische Daten
| CAS No. | 1306-38-3 |
|---|---|
| Summenformel | CeO2 |
| Durchschnittliche Molmasse | 172,115 g/mol |
| SMILES | [O]=[Ce]=[O] |
| InChIKey | CETPSERCERDGAM-UHFFFAOYSA-N |
| PubChem CID | 73963 |
| ChEBI | CHEBI:79089 |
| EC No. | 215-150-4 |
| Lokaler Name | Cerdioxyd |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 34,1 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 2 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 18,3 |
| Stoffklassen | Metals -> Rare Earth Metals |
| Pestizide | Pesticide -> EPA IRIS |
| Dichte | 7.65 @25 °C7.13 g/mL at 25 °C(lit.) |
| Schmelzpunkt | 2600 °C2600°C |
| Physical Description | Dry PowderOther SolidWet SolidLarge CrystalsCBIWhite (pure) to pale yellow crystalsInsoluble in water[Merck Index] |
| Siedepunkt | 3500 °C |
| Lagerbedingungen | Storage temperature: no restrictions. |
| Löslichkeit | insoluble in H2O, dilute acid solutions |
| Aggregatzustand | powder |
| Farbe | Yellow |
| Wichte | 7.132 |
| pH | ~2.7 |
| Geruch | Odorless |
| Spezifische Wärmekapazität | Cp(crystal): 0.36 J/(g·K), at 25℃ |
| Merck | 14,1989 |
| Stabilität | Stable, but absorbs carbon dioxide from the air. |
| Kosmetik-Inhaltsstoffe Funktionen | OPACIFYING |
| InChI | 1S/Ce.2O |
| InChIKey | CETPSERCERDGAM-UHFFFAOYSA-N |
| SMILES | O=[Ce]=O |
| CAS Datenbank | 1306-38-3(CAS DataBase Reference) |
| NIST chemische Informationen | Cerium dioxide(1306-38-3) |
| EPA chemische Informationen | Cerium oxide (CeO2) (1306-38-3) |
Sicherheit & Vorschriften
| GHS-Einstufung | Not ClassifiedAggregated GHS information provided per 651 reports by companies from 11 notifications to the ECHA C&L Inventory.DangerH371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]P260, P264, P270, P308+P316, P319, P405, and P501 (click each P-code to see the statement) |
|---|---|
| Regulatorische Informationen | Chemical: Cerium oxide, (CeO2)Cerium oxide (CeO2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Cerium oxide (CeO2) 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: 10-02-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15783Cerium (IV) oxide: Does not have an individual approval but may be used under an appropriate group standard |
| Weitere Sicherheitsinformationen | IMAP assessments - Cerium oxide, (CeO2): Human health tier I assessment |
| Gefahrenübersicht | Studies indicate that cerium oxide nanoparticles have antiinflammatory effects[HSDB] See Cerium. See RARE EARTH METALS and linked occupational diseases. |
| Hazard Classes and Categories | Not ClassifiedSpecific target organ toxicity - Single exposure - Category 2 (lung) |
| Expositionsschutz und Persönliche Schutzausrüstung | 0.002 [mg/m3], respiratory fraction (also for cerium compounds)[German Research Foundation (DFG)] |
| Protective Action Criteria (PAC) | 15 [mg/m3]170 [mg/m3]990 [mg/m3] |
| Zielorgane | Respiratory |
| Unerwünschte Wirkungen | Fibrogenic - Inducing tissue injury and fibrosis (scarring). |
| EPA IRIS Information | Cerium Oxide and Cerium CompoundsRespiratory |
Anwendungen & Verwendung
Verwenden
The addition of CeO2 to CuO/TiO2 increases specific surface area and inhibits sintering and pore size growth at high temperatures. It is used as an additive in glass industry. Cerium dioxide is mainly used as such or in formulation as a high precision polishing agent for glass products, as catalyst or catalyst support. Polishing and decolorizing glass; opacifier in vitreous enamels and photo chromic glasses; heat-resistant alloy coatings; as a cracking catalyst; as a catalyst for automobile emission control; in ceramic coatings; in phosphors; in cathodes; in capacitors; in semiconductors; in refractory oxides; gemstone polishing, as raw material for the production of glass and ceramics as well as additives in paints and varnishes.
Herstellung & Synthese
synthetische
Cerium(IV) oxide may be obtained by heating cerium oxalate, carbonate or other salts at elevated temperatures: Ce2(C2O4)3 + 2O2 → 2CeO2 + 6CO2