Tantalum

Tantalum Oxide

CAS #: 1314-61-0
Molecular Formula: Ta2O5
EC No.: 215-238-2

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Product Details

Tantalum oxide is a rhombic cylindrical substance. It remains white at 1000 to 1200 degrees Celsius and turns gray when the temperature rises further. It is known that there are two variants :α -TA2O5 (high-temperature type) and β -TA2O5 (low-temperature type), and the temperature for the transformation from the β- type to the α- type is 1360±5℃. The melting point of the α- type is 1872±10℃, and its relative density is 8.37. The melting point of the β -type is 1785±30℃, and its relative density is 8.18. β-Ta2O5 Before melting, it has already transformed into tantalum pentoxide, with a relative density of 7.3 for the amorphous form.

Applications:

It is used for making high-temperature alloys and superconducting alloys.

2. It is used for making optical glass.

3. It is used for the production of lithium tantalate single crystals.

4. It is used for making coating materials.

Product Series

Product

Product Code

Security Data

Technical Data

Tantalum Oxide 99.9%

ET-Ta-01

Tantalum(V) oxide.pdf

Tantalum Oxide Ta2O5 99.9%.pdf

Tantalum Oxide 99.99%

ET-Ta-01

Tantalum Oxide Ta2O5 99.99%.pdf

Properties (Theoretical)

Molecular Formula	O₅Ta₂
Molecular Weight	441.89
Appearance	white, odorless powder
Melting Point	1,872° C (3,402° F)
Boiling Point	N/A
Density	8.2 g/cm3
Precise Quality	212.938 g/mol
Single Isotope Mass	441.870573 Da

Health & Safety Information

Signal Word	N/A
Risk Statement	N/A
Dangerous Code	N/A
Preventive Instructions	N/A
Flash Point	N/A
Risk Code	N/A
Safety Statement	N/A
RTECS Number	WW5855000
Transportation Information	NONH
WGK Germany	nwg

Packaging Specifications:

Standard packaging: 50 kg/drum, 500 kg/pallet, ton bags

Sample packaging: 500 g/bag, 1 kg/bottle

Tantalum Oxide

High-purity tantalum liquid is prepared from impure tantalum liquid materials by liquid-liquid extraction. First, the tantalum liquid is injected into the neutralization and precipitation tank. Under stirring, NH3 gas is introduced to make the PH of the solution 8-9, generating Ta(OH)5 precipitate. Then, it is filtered through a filter press or vacuum filtration. Then, tantalum hydroxide is re-placed in the decomposition tank, hydrofluoric acid and sulfuric acid are added for dissolution, and high-purity tantalum solution is obtained through secondary extraction with organic matter. Step 2: Neutralize the high-purity tantalum solution with ammonia until PH > 9 to generate tantalum hydroxide. Step 3: Then transfer Ta(OH)5 into the vacuum filtration water washing tank, and wash and filter it with pure water until the F content in the filtrate is less than 0.02g/ L. After the washing is qualified, transfer it to the drying oven for drying. Step 4: The dried high-purity tantalum hydroxide is subjected to segmented calcination as follows: (1) First, heat it to 200℃ and maintain it for 2 hours; (2) Heat up to 500℃ again and maintain the temperature for 5 hours. (3) Heat up to 650℃ again and maintain the temperature for 2 hours. (4) Heat up to 800℃ again and maintain the temperature for 4 hours. After cooling to 200℃, it is taken out of the furnace and sieved to obtain high-purity tantalum pentoxide.

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