Synonyms
Samarium rod, 12.7mm (0.5in) dia; Samarium ingot, 3N; Samarium pieces, 12mm (0.47in) & down; Samarium powder; EINECS 231-128-7; AKOS024438061; Samarium foil, 1.0mm (0.04in) thick; Samarium hydride, 99.9%, - 325 mesh SmH2 -3, Hydrogen level may vary; samarium atom; TRA0016065;
Molecular Weight
150.36g/mol
InChI Key
KZUNJOHGWZRPMI-UHFFFAOYSA-N;
Density
7.52 g cu cm at 25 deg C;
Color Form
Silvery metal; rhombohedral;
Covalently-Bonded Unit Count
1
Monoisotopic Mass
151.92g/mol
Other Experimental
Samarium has high thermal neutron capture cross section ... has a low rate of burn off when used in control rods or in ceramics for radiation protection;Reasonably stable in air;Three crystal modifications of the metal exit, eith transformations at 734 and 922 deg C;Ignites in air at 150 deg C;Specific heat capacity at 298 K, J-mol/K: 29.6; linear coefficient of expansion, 10-6/K: 10.4; thermal conductivity W/cm/K: 0.133; Vickers hardness: 45; Modulus of elasticity, 10+10 N/sq m: 5.75; Shear modulus, 10+10 N/sq m:1.26;Poisson's ratio: 0.352; Grueneisen constant for temperature dependence of electrical resistivity: 0.63; Electrical resistivity, microohlm/cm: 94; Electrion emission, eV: 2.7-2.8; crystal structure of stable phase at room temperature; Lattice constants, nm: 0.3621 (a); 2.625 (c); Distillation rate: 83 g-sq cm/hr at 1.3X10-3 bar;33 isotopes and isomers of samarium ... natural samarium is a mixture of seven isotopes, three of which are unstable but have long half-lives;Samarium-147 and -148 are naturally occurring and stable. Samarium-129 through -143 and samarium-155 through -162 are artificially produced and are radioactive.;
Topological Polar Surface Area
0A^2
Vapor Pressure
1.3X10-5 bar at 722 mm Hg; 1.3X10-3 bar at 964 mm Hg;