Tantalum single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (111) orientation, ±0.5°, zone refined

• CAS: 7440-25-7
• Catalog Number: ACM7440257
• 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 purpose of the Tantalum single crystal disc is to leverage the unique properties of tantalum-such as its excellent corrosion resistance, high melting point, and stability at high temperatures-for use in advanced electronic applications and chemical equipment. With its (111) orientation and precise zone refinement, this disc is ideally suited for the manufacture of high-performance capacitors and other electronic components, where reliability and precision are critical. The single crystal form ensures superior material properties and uniformity, while its resistance to chemical attack makes it an invaluable material for creating tools and equipment exposed to harsh environments.
• 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