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Ditantalpentaoxid
TANTALUM OXIDE · TANTALUM(V) OXIDE · Ta2-O5 · tantalic oxide · Tantalum(Ⅴ)oxide · TANTALUM(+5)OXIDE · tatalum pentoxide · Ditantalpentaoxid
Identifikatoren & physikalische Daten
| CAS No. | 1314-61-0 |
|---|---|
| Summenformel | O5Ta2 |
| Durchschnittliche Molmasse | 441,89 g/mol |
| Monoisotopische Masse | 441,8705647 g/mol |
| SMILES | [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] |
| InChIKey | BPUBBGLMJRNUCC-UHFFFAOYSA-N |
| PubChem CID | 62157 |
| EC No. | 215-238-2 |
| DTXSID | DTXSID10893849 |
| Lokaler Name | Ditantalpentaoxid |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 5 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 5 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 7 |
| Formalladung | 0 |
| Komplexität | 0 |
| Stoffklassen | Flammable agents - 2nd degree |
| SpringerMaterials Properties | dielectric constant |
| Dichte | 8.2 @25 °C8.2 g/mL at 25 °C(lit.) |
| Schmelzpunkt | 1872 °C |
| Physical Description | Dry Powder |
| Lagerbedingungen | Sealed in dry,Room Temperature |
| Löslichkeit | insoluble in H2O, ethanol, acid solutionssHFInsoluble in water. |
| Aggregatzustand | lumps |
| Farbe | White to white-beige |
| Wichte | 8.2 |
| Spezifische Wärmekapazität | Cp(crystal): 0.31 J/(g·K), at 25℃ |
| Merck | 14,9056 |
| Dielektrizitätskonstante | 11.6(Ambient) |
| InChI | InChI=1S/5O.2Ta |
| InChIKey | PBCFLUZVCVVTBY-UHFFFAOYSA-N |
| SMILES | [Ta](=O)(=O)O[Ta](=O)=O |
| CAS Datenbank | 1314-61-0(CAS DataBase Reference) |
| EPA chemische Informationen | Tantalum oxide (Ta2O5) (1314-61-0) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 97.5% (78 of 80) of all reports.Not ClassifiedAggregated GHS information provided per 80 reports by companies from 3 notifications to the ECHA C&L Inventory. |
|---|---|
| Regulatorische Informationen | Chemical: Tantalum oxide (Ta2O5)Tantalum oxide (Ta2O5) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Tantalum oxide (Ta2O5) 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: 03-11-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/13430Tantalum oxide dusts: Does not have an individual approval but may be used under an appropriate group standardThe New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| Hazard Classes and Categories | Not ClassifiedFlammable agents - 2nd degree |
| Protective Action Criteria (PAC) | 10 [mg/m3]260 [mg/m3]1600 [mg/m3] |
| Wassergefährdungsklasse (WGK) | - |
| TSCA-Inventar-Status | TSCA listed |
| Zollcode | 28259085 |
| RTECS-Nr. | WW5855000 |
| R-Sätze (R) | 36/37/38 |
| Toxizität | LD50 orally in rats: 8000 mg/kg (Cochran) |
| Gefahrensymbole | Xi |
| Sicherheitshinweise (S) | 37/39-26 |
| Lagerklasse | 11 - Combustible Solids |
Anwendungen & Verwendung
Verwenden
Tantalum pentoxide is used in making high refractive index optical glass; as a dielectric film on tantalum for its use as a capacitor component and rectifier; and for preparing tantalum metal, its carbide, and many other tantalum compounds.
Herstellung & Synthese
synthetische
Tantalum pentoxide is obtained as an intermediate in extracting tantalum from the columbite-tantalite series of minerals. Also, the oxide can be made by heating Ta metal in oxygen or air at elevated temperatures.