Basic information
- CAS
1314-61-0- Standard SMILES
[O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5]- InChIKey
BPUBBGLMJRNUCC-UHFFFAOYSA-N- Molecular formula
- O5Ta2
- Average molar mass
- 441.89 g/mol
- Monoisotopic mass
- 441.8705647
Names & identifiers
- Preferred name
- Tantalum pentoxide
- IUPAC
- pentakis(oxygen(2-));bis(tantalum(5+))
- English name
- Tantalum pentoxide
- Molecular formula
- O5Ta2
- Molecular weight
- 441.89
Names & synonyms
Tantalum(V) oxideTantalum pentoxide1314-61-0Tantalum oxide (Ta2O5)Tantalic acid anhydrideDitantalum pentaoxideTantalum penta oxideOEZ64Z53M4DTXSID10893849tantalumpentoxideRefChem:891102DTXCID601323889
Show more names
Ta2-O5tantalic oxideTantalum(Ⅴ)oxideTANTALUM(+5)OXIDEtatalum pentoxideDitantalpentaoxidbis(tantalum(5+))
215-238-2TANTALUM OXIDETantalum oxide dustsoxygen(2-);tantalum(5+)EINECS 215-238-2UNII-OEZ64Z53M4TANTALUM PENTOXIDE [MI]EC 215-238-2
Database identifiers
- CAS
1314-61-0、59763-75-6- PubChem CID
- 62157
- DTXSID
DTXSID10893849- UNII
- OEZ64Z53M4
- EC Number
- 215-238-2
Properties
Computed structural properties
- Topological polar surface area
- 5 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 5
- Rotatable bonds
- 0
- Heavy atoms
- 7
- Formal charge
- 0
- Complexity
- 0
Experimental & physicochemical properties
Chemical ClassesFlammable agents - 2nd degree
SpringerMaterials Propertiesdielectric constant
Density8.2 @25 °C
Melting Point1872 °C
Physical DescriptionDry Powder
Physicochemical properties
- Melting point
- 1872 °C · 1872 °C
- Density
- 8.2 g/mL · 8.2 g/mL at 25 °C(lit.)
- storage temp.
- Sealed in dry,Room Temperature
- solubility
- 2 O, · insoluble in H2O, ethanol, acid solutions; sHF
- form
- lumps
- color
- White to white-beige
- Specific Gravity
- 8.2 · 8.2
- Resistivity
- 1 · 1.0 ∞ 10*12 (ρ/μΩ.cm)
- Water Solubility
Safety & regulation
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 97.5% (78 of 80) of all reports.
Not Classified
Aggregated GHS information provided per 80 reports by companies from 3 notifications to the ECHA C&L Inventory.
Hazard information
Regulatory Information
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/13430
Tantalum oxide dusts: Does not have an individual approval but may be used under an appropriate group standard
The 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 Classified
Flammable agents - 2nd degree
Safety & protection
Protective Action Criteria (PAC)
10 [mg/m3]
260 [mg/m3]
1600 [mg/m3]
Safety data
- wgk
- -
- tsca
- TSCA listed
- rtecs
- WW5855000
- hs_code
- 28259085
- Toxicity
Chemistry & industry
Uses & manufacturing
U.S. Production2023: 75,000 - <500,000 lb
Consumer UsesNot Known or Reasonably Ascertainable
Industry UsesNot Known or Reasonably Ascertainable
General Manufacturing Information
Computer and Electronic Product Manufacturing
Tantalum oxide (Ta2O5): ACTIVE
Applications
UsesTantalum oxide is used to make optical glass for lenses and in electronic circuits.
UsesTantalum 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.
UsesTantalum pentoxide (Ta2O5) is used to make special optical glass, for lasers, and in electronic circuits.
General DescriptionTantalum pentoxide is dielectric in nature making it useful for making capacitors in the electronics industry.
Preparation methods
PreparationTantalum 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.
Upstream & downstream products
Upstream raw materials
Related reactions
1 records
Compound notes
Loading…