Chemical Properties of tantalum (CAS 7440-25-7)

tantalum

InChI
InChI=1S/Ta
InChI Key
GUVRBAGPIYLISA-UHFFFAOYSA-N
Formula
Ta
SMILES
[Ta]
Molecular Weight1
180.95
CAS
7440-25-7
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Physical Properties

Property Value Unit Source
EA 0.32 ± 0.01 eV NIST
IE [7.31; 7.89] eV Show Hide
IE 7.89 eV NIST
IE 7.89 eV NIST
IE 7.31 ± 0.09 eV NIST
IE 7.89 eV NIST
IE 7.89 eV NIST

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Temperature Dependent Properties

Property Value Unit Temperature (K) Source
η [0.0074000; 0.0134000] Pa×s [2880.00; 3514.00] Show Hide
η 0.0134000 Pa×s 2880.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0131000 Pa×s 2900.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0124000 Pa×s 2950.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0117000 Pa×s 3000.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0111000 Pa×s 3050.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0106000 Pa×s 3100.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0101000 Pa×s 3150.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0096000 Pa×s 3200.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0092000 Pa×s 3250.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0089000 Pa×s 3293.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0088000 Pa×s 3300.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0084000 Pa×s 3350.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0081000 Pa×s 3400.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0078000 Pa×s 3450.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0075000 Pa×s 3500.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation
η 0.0074000 Pa×s 3514.00 Viscosity of molten Mo, Ta, Os, Re, and W measured by electrostatic levitation

Correlations

Property Value Unit Temperature (K) Source
Pvap [1.28e-03; 101.33] kPa [3297.15; 5731.15] The Yaws Handbook of Vapor Pressure Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.80936e+01
Coefficient B-7.19872e+04
Coefficient C-3.88960e+02
Temperature range, min.3297.15
Temperature range, max.5731.15
Pvap 1.28e-03 kPa 3297.15 Calculated Property
Pvap 0.01 kPa 3567.59 Calculated Property
Pvap 0.06 kPa 3838.04 Calculated Property
Pvap 0.28 kPa 4108.48 Calculated Property
Pvap 1.05 kPa 4378.93 Calculated Property
Pvap 3.31 kPa 4649.37 Calculated Property
Pvap 9.07 kPa 4919.82 Calculated Property
Pvap 22.20 kPa 5190.26 Calculated Property
Pvap 49.39 kPa 5460.71 Calculated Property
Pvap 101.33 kPa 5731.15 Calculated Property

Sources

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