Specification
Description
DryPowder, OtherSolid; OtherSolid; PelletsLargeCrystals, OtherSolid;Solid
InChI Key
KDLHZDBZIXYQEI-UHFFFAOYSA-N
Melting Point
1554.9 °C;1554.9°C
Solubility
Soluble in aqua regia and fused alkalies; insoluble in organic acids
Application
The Palladium single crystal disc, measuring 10mm in diameter and 1-2mm in thickness with a (111) orientation and a precision of ±0.5°, serves as a crucial component in advanced scientific and industrial applications. Its unique structure and orientation make it ideal for research and development purposes, specifically in the field of catalysis and material science. The Palladium crystal's well-defined surface enables detailed investigations of surface chemistry, aiding in the study of catalytic processes, electronic properties, and other phenomena that are essential for the advancement of technology and industrial innovations.
Color/Form
Silver-white, ductile metal;Steel white;Silver-white metal; cubic
Covalently-Bonded Unit Count
1
Decomposition
No decomposition. /from table/
Electrical Resistivity
10.54 microhm-cm @ 20°C
Electronegativity
2.2 Paulings
Exact Mass
105.90348g/mol
Heat of Vaporization
90 K-cal/gm atom at 2970°C
Monoisotopic Mass
105.90348g/mol
Other Experimental
Palladium is the lightest of the platinum group and very malleable and ductile when pure. It resists oxidation at ordinary temperatures. It absorbs a considerable amount of hydrogen gas. It is appreciably volatile at high temperatures. At red heat it is converted to the oxide.;Stable isotopes: (102)Pd, 1.02%; (1.4)Pd, 11.14%; (105)Pd, 22.23%; (106)Pd, 27.33%; (108)Pd, 26.46%; (110)Pd, 11.72%;Usual valency, 2,4; ionic radius, 65 pm, crystal structure, face-centered cubic; lattice constant, 389 pm; reflectance, 54%; thermal expansion, 11.11X10+6 °C-1; magnetic susceptibility, 5.23X10-6 cu cm/g; work function, 4.99 eV; Young's modulus, 1.24X10+8 kN/sq m; ultimate tensile strength, 180-200 MPa; Poisson's ratio, 0.39; Vicker's hardness, 40; temperature coefficient of resistance 3.8X10-3 K-1; electrical resistivity at 0 °C, 9.93 microohm-cm; thermal conductivity, 75 W/m K;Palladium is stable in air, even at elevated temperatures; shows no corrosion or tarnishing in hydrogen sulfide atmospheres.;Enthalpy of formation at 298.15 K: 378.2 kJ/mol (gas); molar heat capacity at 298.15 K: 26.0 J/mol K (crystal), 20.8 J/mol K (gas);Enthalpy of fusion: 16.74 kJ/mol at 1554.9 °C
Precautionary Statements
P210-P261-P305 + P351 + P338
Specific Heat
0.0584 Cal/g/K @ 25°C
Thermal Conductivity
0.718 W/cm/K @ 298.2 K
Vapor Pressure
3.47 Pa (0.0260 mm Hg) at 1552 °C
