Catalog Number
ACM7440257-2
Product Name
Tantalum single crystal, 11-12mm (0.43-0.47in) dia, 100mm (3.9in) long, (100) orientation, zone refined
Category
Evaporation Materials; Single Crystals; Nanopowders
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.
Molecular Weight
180.9479g/mol
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
Purity
99%, 99.9%, 99.99%, 99.999%
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.
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)
Hazard Statements
H228-H315-H319-H335
Heat of Vaporization
7.53X10+5 J/mol
MeSH Entry Terms
Tantalum;Tantalum 181;Tantalum-181
Monoisotopic Mass
180.948g/mol
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
Refractive Index
Index of refraction: 2.05
Safety Description
26-36/37/39
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)
