Tantalum(5+)

Base Information

• Chemical Name: Tantalum(5+)
• CAS No.: 7440-25-7
• Molecular Formula: Ta
• Molecular Weight: 180.9479
• Hs Code.: 8103909000
• Mol file: 7440-25-7.mol

Synonyms:

Chemical Property of Tantalum(5+)

Chemical Property:

• Appearance/Colour: wire
• Vapor Pressure: <0.01 mm Hg ( 537.2 °C)
• Melting Point: 2996 ºC(lit.)
• Boiling Point: 5425 ºC(lit.)
• PSA: 0.00000
• Density: 16,6 g/cm³
• LogP: 0.00000
• Storage Temp.: no restrictions.
• Water Solubility.: very resistant to attack by acids except HF, resistant to alkali solutions [KIR83]
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 180.94800
• Heavy Atom Count: 1
• Complexity: 0

Purity/Quality:

99.9% ^*data from raw suppliers

Tantalum powder (99.98%, Nb-25ppm) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): FXiXn
• Hazard Codes: F,Xi,Xn,C
• Statements: 11-36/37/38-20/21/22-40-34-36/38
• Safety Statements: 16-26-33-36/37/39-36-45-27-36/37

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: [Ta+5]
• Uses: Tantalum filaments were used in incandescent lamp bulbs before tungsten replaced them. At temperatures below 150°C, tantalum is attacked only by hydrofluoric acid, fluoride ion in acidic solutions, and free sulfur trioxide. It also is attacked, but slowly, by alkalies. Tantalum and its alloys, therefore, are used to build reactors, vessels, and cruicibles for preparing and carrying out reactions involving many reactive intermediates. The metal and its alloys are used to construct furnace parts, electrolytic capacitors, aircraft and missile parts, chemical process equipment, and nuclear reactors. Being nonreactive to body fluids and a nonirritant to body tissues, tantalum is used in making surgical appliances. Plate and sheet tantalum are applied in bone repair, foil and wire for nerve repair, and plate, gauge, and sheet for repair of abdominal muscle. Tantalum oxide is used to produce optical glasses of high refractive index. The oxide film on the metal makes it a rectifier for converting alternating current to direct current. In pen points; analytical weights; apparatus and instruments for chemical, surgical, and dental use instead of platinum, in tantalum capacitors (a type of electrolytic condenser, trademarked "Tantalytic"). A mixture of tantalum carbide (TaC) and graphite is a very hard material and is used toform the cutting edge of machine tools. Tantalum pentoxide (Ta2O5) is dielectric, making ituseful to make capacitors in the electronics industry. When mixed with high-quality glass, itimparts a high index of refraction, making it ideal for camera and other types of lenses.Because of its hardness and noncorrosiveness, tantalum is used to make dental and surgicaltools and implants and artificial joints, pins, and screws. The metal does not interactwith human tissues and fluids. Since tantalum can be drawn into thin wires, it is used inthe electronics industry, to make smoke detectors, as a getter in vacuum tubes to absorbresidual gases, and as filaments in incandescent lamps. It has many other uses in the electronicsindustry.The use of tantalum to make miniaturized electrolytic capacitors that store electric chargesin devices such as cell phones and computers is becoming increasingly popular. Powderedtantalum is used in the process of sintering to form malleable bars and plates as well as specialelectrodes for the electronics industry.As a result of their hardness, noncorrosiveness, and ductility, tantalum alloys are used tofabricate parts for nuclear reactors, missiles, and airplanes, and in industries where metal withthese qualities is required. Manufacture of capacitors and other electronic components; chemical equipment and corrosion-resistant tools.
• Physical properties: Tantalum has properties similar to niobium and vanadium above it in group 5. It is a veryhard and heavy metal with a bluish color when in its rough state, but if polished, it has a silveryshine. It is ductile, meaning it can be drawn into fine wires, and also malleable, meaningit can be hammered and worked into shapes. Thin strips and wires of tantalum will ignite inair if exposed to a flame.Tantalum’s melting point is 2,996°C, which is almost as high as tungsten and rhenium. Itboiling point is 5,425°C, and its density is 19.3 g/cm3.