Tantalum

• CAS: 7440-25-7
• Catalog Number: ACM7440257-6
• Category: Nanoparticles & Nanopowders
• Molecular Weight: 180.95
• Molecular Formula: Ta
• Description: The structure of tantalum is body centered cubic (BCC) metal. It is a refractory metal; stable up to very high temperatures. Tantalum is ductile at room temperature and moderately ductile at cryogenic temperatures. Compton profile of highly pure thin elemental foil of tantalum was investigated using IGP type coaxial photon detector.1
• Synonyms: Ta
• IUPAC Name: tantalum
• SMILES: [Ta]
• InChI: 1S/Ta,GUVRBAGPIYLISA-UHFFFAOYSA-N
• InChI Key: GUVRBAGPIYLISA-UHFFFAOYSA-N
• Boiling Point: 5425 °C (lit.)
• Melting Point: 2996 °C (lit.)
• Density: 16.69 g/cm³ (lit.)
• Solubility: Insoluble (NIOSH, 2016);Soluble in fused alkalies; insoluble in acids except hydrofluoric and fuming sulfuric acids;Insoluble in water.;Solubility in water: none;Insoluble
• Application: Sputtering is a process whereby atoms are ejected from a solid target material due to bombardment of the target by energetic particles. The extreme miniaturization of components in the semiconductor and electronics industry requires high purity sputtering targets for thin film deposition.
• Storage: room temp
• Assay: 99.95% trace metals basis
• Autoignition Temperature: 572 °F
• Color/Form: Silvery gray metal, body-centered cubic crystal structure;CUBIC OR POWDER;Gray, very hard, malleable, ductile metal;Black powder; steel-blue-colored metal when unpolished, nearly platinum white when polished;Metal: Steel-blue to gray solid or black powder.
• Covalently-Bonded Unit Count: 1
• EC Number: 231-135-5
• Exact Mass: 180.948g/mol
• Form: foil
• Heavy Atom Count: 1
• ICSC Number: 1596
• MDL Number: MFCD00011252
• Monoisotopic Mass: 180.948g/mol
• Odor: Odorless
• Other Experimental: Atomic number: 73; can readily be drawn in fine wires; valences: 5, also 4, 3, 2.;Two naturally occurring isotopes: 181 (99.99877%); 180 (0.0123%) Half-life: >10+12 years; artificial isotopes: 172-179; 182-186;Specific heat (0 deg C): 0.036 cal/g deg C; Electrical resistivity: (18 deg C): 12.4 microohm-cm;Very resistant to chemical attack; not attacked by aqueous acids other than hydrofluoric; not attacked by aqueous alkalies; slowly attacked by fused alkalies. Reacts with fluorine, chlorine, and oxygen only on heating. At high temperatures absorbs several hundred times its volume of hydrogen; combines with nitrogen, with carbon.;HAS GOOD "GETTERING" ABILITY @ HIGH TEMP;Tensile strength of drawn wire may be as high as 130,000 psi; expansion coefficient 8X10-6 over range 20-1500 deg C; Electrical resistivity: 13.6 microohm-cm @ 0 deg C; 32.0 microohm-cm @ 500 deg C; dust or powder may be flammable.;99.5% pure tantalum is resistant to all concentrations of hot and cold sulfuric acid (except concentrated boiling); hydrochloric acid, nitric and acetic acids, hot and cold dilute sodium hydroxide, all dilutions of hot and cold ammonium hydroxide, mine and seawaters, moist sulfurous atmospheres, aqueous solutions of chlorine;Enthalpy of formation (gas) 782.0 kJ/mol; Heat capacity: 25.4 J/K mol (crystal); 20.9 J/K mol (gas);Thermal conductivity: 0.540 J/cm deg C @ 20 deg C; 0.680 J/cm deg C @ 568 deg C; 0.720 J/cm deg C @ 828 deg C; Enthalpy of fusion: 31,400 J/mol;Maximum valence +5; oxidation states of +4, +3, and +2 are known, but are unstable forms;The dry powder ignites spontaneously in air.
• Packaging: 1 ea in rigid mailer
• Physical Description: Tantalum dust is a black odorless powder. mp: 2996° C, bp: approx. 5250°C. Density: 16.65 g/cm³. Insoluble in water. Tantalum oxide dust is a white, microcrystalline powder mp: 1800°C. Density: 7.6 g/cm³. Insoluble in water. The mixture is listed as a toxic inhalation hazard by OSHA.;DryPowder; DryPowder, OtherSolid; OtherSolid; PelletsLargeCrystals;BLACK SOLID IN VARIOUS FORMS.;Steel-blue to gray solid or black, odorless powder.;Metal: Steel-blue to gray solid or black, odorless powder.
• Quality Level: 100
• RTECS Number: WW5505000
• Topological Polar Surface Area: 0A^2
• UNII: 6424HBN274
• UN Number: 3089
• Vapor Pressure: <0.01 mmHg ( 537.2 °C)

Custom Q&A

What is the PubChem CID for Tantalum?

PubChem CID 23956.

What is the molecular formula of Tantalum?

The molecular formula is Ta.

What is the molecular weight of Tantalum?

The molecular weight is 180.9479 g/mol.

Is Tantalum soluble in water?

No, Tantalum is insoluble in water.

What is the melting point of Tantalum dust?

The melting point is 2996 °C.

What is the boiling point of Tantalum dust?

The boiling point is approximately 5250 °C.

Is Tantalum oxide dust soluble in water?

No, Tantalum oxide dust is also insoluble in water.

Is Tantalum listed as a toxic inhalation hazard by OSHA?

Yes, the mixture is listed as a toxic inhalation hazard by OSHA.

What are some synonyms for Tantalum?

Some synonyms for Tantalum include Tantalum elemental and Tantalum metal.

What has Tantalum been investigated for in terms of its medical applications?

Tantalum has been investigated for the treatment and prevention of Osteoarthritis, Knee Osteoarthritis, Intraoperative Bleeding, and Adolescent Idiopathic Scoliosis.