| Identification | More | [Name]
TANTALUM(V) OXIDE | [CAS]
1314-61-0 | [Synonyms]
Tantalic acid anhydride
TANTALUM(+5)OXIDE
TANTALUM OXIDE
TANTALUM PENTOXIDE
TANTALUM(V) OXIDE
Ta2-O5
Tantalum oxide (Ta2O5)
Tantalum penta oxide
tantalumoxide(ta2o5)
tantalumpentaoxide
ditantalum pentaoxide
Tantalumoxidewhitepowder
Tantalum(Ⅴ)oxide
AMMONIUM CHLORIDE EXTRA PURE, DAB, PH. E
TANTALUM(V) OXIDE POWDER
Tantalum(V) oxide, <5 micron, 99.99% metals basis
TANTALUM(V) OXIDE, MESOPOROUS, 32A PORE
TANTALUM(V) OXIDE, MESOPOROUS, 22A PORE, 99.9%
TANTALUM(V) OXIDE, LUMP, 99%
TANTALUM (V) OXIDE 99.99% DISC Ф7×5MM | [EINECS(EC#)]
215-238-2 | [Molecular Formula]
O5Ta2 | [MDL Number]
MFCD00011254 | [Molecular Weight]
441.89 | [MOL File]
1314-61-0.mol |
| Chemical Properties | Back Directory | [Appearance]
white to white-beige powder | [Melting point ]
1872 °C
| [density ]
8.2 g/mL at 25 °C(lit.)
| [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
insoluble in H2O, ethanol, acid solutions; sHF | [form ]
lumps
| [color ]
White to white-beige | [Specific Gravity]
8.2 | [Resistivity]
1.0 ∞ 10*12 (ρ/μΩ.cm) | [Water Solubility ]
Insoluble in water. | [Crystal Structure]
Trigonal | [Merck ]
14,9056 | [Dielectric constant]
11.6（Ambient） | [Exposure limits]
OSHA: TWA 5 mg/m3
NIOSH: IDLH 2500 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3 | [InChI]
InChI=1S/5O.2Ta | [InChIKey]
PBCFLUZVCVVTBY-UHFFFAOYSA-N | [SMILES]
[Ta](=O)(=O)O[Ta](=O)=O | [CAS DataBase Reference]
1314-61-0(CAS DataBase Reference) | [EPA Substance Registry System]
Tantalum oxide (Ta2O5) (1314-61-0) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [WGK Germany ]
-
| [RTECS ]
WW5855000
| [TSCA ]
Yes | [HS Code ]
28259085 | [Safety Profile]
Mildly toxic by ingestion. Incompatible with ClF3, BrF3, Li. See also TANTALUM. | [Toxicity]
LD50 orally in rats: 8000 mg/kg (Cochran) |
| Questions and Answers (Q&A) | Back Directory | [Uses]
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.
| [Preparation]
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.
|
| Hazard Information | Back Directory | [Chemical Properties]
Tantalum pentoxide, Ta2O5, is a white powder existing in two thermodynamically stable modifications. The orthorombic b-phase changes at 1,360 °C (2,480 °F) into the tetragonal a-modification. The existence of an e-modification has also been reported. Tantalum pentoxide reacts slowly with hot hydrofluoric acid but is insoluble in water and in most solutions of acids and alkalies. For analytical purposes, it can be dissolved by fusion with alkali hydroxides, alkali carbonates, and potassium pyrosulfate. | [Chemical Properties]
white to white-beige powder | [Physical properties]
White orthorhombic crystal or powder; density 8.20 g/cm3; melts at 1,785°C; insoluble in water, ethanol and practically all acids; soluble in hydrofluoric acid; solubilized by fusion with caustic potash or potassium hydrogen sulfate. | [General Description]
Tantalum pentoxide is dielectric in nature making it useful for making capacitors in the electronics industry. | [Hazard]
TLV: 5 mg/m3. | [Flammability and Explosibility]
Nonflammable |
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