Tantalum single crystal, 11-12mm (0.43-0.47in) dia, 100mm (3.9in) long, (100) orientation, zone refined

• CAS: 7440-25-7
• Catalog Number: ACM7440257-2
• Category: Pure Element Single Crystals
• Molecular Weight: 180.9479g/mol
• Molecular Formula: Ta
• 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.
• IUPAC Name: tantalum
• Canonical SMILES: [Ta]
• InChI: InChI=1S/Ta
• InChI Key: GUVRBAGPIYLISA-UHFFFAOYSA-N
• Boiling Point: 9797 °F at 760 mm Hg (NIOSH, 2016);5429 °C;5425 °C;9797°F;9797°F
• Melting Point: 5425 °F (NIOSH, 2016);2996 °C;2996 °C;5425°F;5425°F
• Flash Point: >250 °C
• Density: 16.65 (metal), 14.40 (powder) (NIOSH, 2016);14.491 g/cu cm (powder); 16.6 g/cu cm (worked metal);14.5 g/cm³;16.65 (metal) 14.40 (powder);16.65 (metal) 14.40 (powder)
• 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
• Appearance: Silvery-gray solid
• Application: The Tantalum single crystal is designed to meet the demands of cutting-edge technology and research, thanks to its precise dimensions of 11-12mm in diameter and 100mm in length. With a (100) orientation and enhanced purity through zone refinement, it offers exceptional structural uniformity and optimal electrical properties. Tantalum, always closely associated with niobium due to their similar characteristics, shares applications in advanced fields, much like how niobium is utilized in high-temperature alloys and superconductors. The Tantalum single crystal serves a critical role in applications requiring precise control over material properties, making it an invaluable resource in scientific investigations and technological innovations.
• 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.
• Complexity: 0
• Covalently-Bonded Unit Count: 1
• Crystal Phase: α: body-centered cubic (bcc) / β: tetragonal
• EC Number: 237-770-4;231-135-5
• Electrical Resistivity: 131 nΩ·m (20 °C)
• Electronegativity: 1.5 Paulings
• Exact Mass: 180.948g/mol
• Formal Charge: 0
• Hazard Codes: F, Xi
• Hazard Statements: H228-H315-H319-H335
• H-Bond Acceptor: 0
• H-Bond Donor: 0
• Heat of Fusion: 36.57 kJ/mol
• Heat of Vaporization: 7.53X10+5 J/mol
• 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 °C): 0.036 cal/g °C; Electrical resistivity: (18 °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 °C; Electrical resistivity: 13.6 microohm-cm @ 0 °C; 32.0 microohm-cm @ 500 °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 °C @ 20 °C; 0.680 J/cm °C @ 568 °C; 0.720 J/cm °C @ 828 °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.
• Precautionary Statements: P210-P261-P280-P305+P351+P338-P405-P501
• Ratio: 0.34
• Refractive Index: Index of refraction: 2.05
• Risk Codes: 11-36/37/38
• Rotatable Bond Count: 0
• RTECS Number: WW5505000
• Safety Description: 26-36/37/39
• Signal Word: Danger
• Specific Heat: 140 J/kg·K
• Thermal Conductivity: 57.5 W/m·K
• Thermal Expansion: 6.3 µm/m·K
• UNII: 6424HBN274
• UN Number: 3089;3089
• Vapor Pressure: 0 mm Hg (approx) (NIOSH, 2016);1 kPa @ 3024 °C; 10 Pa @ 3324 °C; 100 Pa @ 3684 °C; 1 kPa @ 4122 °C; 10 k Pa @ 4666 °C; 100 kPa @ 5361 °C;0 mmHg (approx);0 mmHg (approx)
• Vickers Hardness: 870-1200 MPa
• Young's Modulus: 186 GPa

Custom Q&A

What is the molecular formula of Tantalum?

The molecular formula of Tantalum is Ta.

What is the molecular weight of Tantalum?

The molecular weight of Tantalum is 180.9479 g/mol.

What is the IUPAC Name of Tantalum?

The IUPAC Name of Tantalum is tantalum.

What is the InChIKey of Tantalum?

The InChIKey of Tantalum is GUVRBAGPIYLISA-UHFFFAOYSA-N.

Is Tantalum soluble in water?

No, Tantalum is insoluble in water.

What is the melting point of Tantalum dust?

The melting point of Tantalum dust is 2996 °C.

What is the density of Tantalum oxide dust?

The density of Tantalum oxide dust is 7.6 g/cm3.

How is Tantalum listed by OSHA?

The mixture of Tantalum is listed as a toxic inhalation hazard by OSHA.

What is the CAS number for Tantalum?

The CAS number for Tantalum is 7440-25-7.

What is the UN Number for Tantalum?

The UN Number for Tantalum is 3089.