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

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Catalog Number
ACM7440564-6
Product Name
Germanium single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (111) orientation, ±0.5°
Structure
Structure
CAS
7440-56-4
Category
Pure Element Single Crystals
Description
PelletsLargeCrystals, WetSolid, OtherSolid
IUPAC Name
germanium
Molecular Weight
72.63g/mol
Molecular Formula
Ge
Canonical SMILES
[Ge]
InChI
InChI=1S/Ge
InChI Key
GNPVGFCGXDBREM-UHFFFAOYSA-N
Boiling Point
2700 °C
Melting Point
937.2 °C
Density
5.323 @ 25 °C/4 °C
Solubility
INSOL IN WATER, HYDROCHLORIC ACID, DIL ALKALI HYDROXIDES;SOL IN HOT SULFURIC ACID, AQUA REGIA; INSOL IN ALKALI
Appearance
Black Lump
Color/Form
GRAYISH-WHITE, LUSTROUS, BRITTLE METALLOID; DIAMOND-CUBIC STRUCTURE WHEN CRYSTALLINE
Complexity
0
Covalently-Bonded Unit Count
1
EC Number
231-164-3
Electrical Resistivity
microhm-cm @ 20 °C
Electronegativity
1.8 Paulings
Exact Mass
73.921178g/mol
Formal Charge
0
H-Bond Acceptor
0
H-Bond Donor
0
Heat of Fusion
8.3 Cal/gm mole
Heat of Vaporization
3.5733X10+8 J/kmol @ melting point
Heavy Atom Count
1
MDL Number
MFCD00085310
Monoisotopic Mass
73.921178g/mol
Other Experimental
THERMAL EXPANSION COEFFICIENT AT APPROX 25 °C: 6.1X10-6 °C; THERMAL CONDUCTIVITY @ 25 °C: 0.14 CAL/SEC CM/DEG C; SPECIFIC HEAT (0-100 °C): 0.074 CAL/G/DEG C;LATTICE CONSTANT @ 25 DEG: 5.657X10-8 CM; VOL COMPRESSIBILITY: 1.3X10-12 SQ CM/DYN; DIELECTRIC CONSTANT: 16; MAGNETIC (MASS) SUSCEPTIBILITY (CHI X10+6)= -0.12;COVALENT BOND IONIZATION ENERGY @ 0 DEG K= 1.2 ELECTRON VOLT; BAND GAP: 0.67 ELECTRON VOLT; ATOMS/CC= 4.42X10+22; IMPURITY ATOM IONIZATION ENERGY: APPROX 0.01 ELECTRON VOLT; INTRINSIC RESISTIVITY @ 300 DEG K= 47 OHM-CM;ELECTRON MOBILITY @ 300 DEG K: 3900 SQ CM/V SEC; HOLE MOBILITY @ 300 DEG K= 1900 CM/V SEC; HOLE DIFFUSION CONSTANT @ 300 DEG K= 49;INTRINSIC CHARGE DENSITY @ 300 DEG K= 2.4X10+13; ELECTRON DIFFUSION CONSTANT @ 300 DEG K= 100;IS HIGHLY TRANSPARENT TO INFRARED LIGHT; HAS A HIGH INDEX OF REFRACTION;THE METAL & MANY OF ITS ALLOYS EXPAND ON SOLIDIFICATION;FIVE NATURALLY OCCURRING ISOTOPES: 70 (20.55%); 72 (27.37%); 73 (7.67%); 74 (36.74%); 76 (7.67%); ATOMIC NUMBER 32;POOR CONDUCTOR OF ELECTRICITY; VOL SMALLER BY FEW % WHEN MOLTEN; ATTACKED BY AQUA REGIA, CONCN NITRIC OR SULFURIC ACIDS, FUSED ALKALIES, ALKALI PEROXIDES, NITRATES, OR CARBONATES;HARDNESS 6 ON MOHS SCALE;Liquid molar volume = 0.013001 cu m/kmol determined at the triple point.;IG heat of formation = 3.766X10+8 J/kmol (ideal gas); for the crystal the enthalpy of formation is 0 at 298.15 K.;Heat of fusion at melting point = 3.18X10+7 J/kmol.
Precautionary Statements
P261-P305 + P351 + P338
Ratio
0.26
Rotatable Bond Count
0
Specific Heat
0.077 Cal/g/K @ 25 °C
Stability
RELATIVELY STABLE, UNAFFECTED BY AIR, BECOMES OXIDIZED ABOVE 600 °C
Thermal Conductivity
0.602 W/cm/K @ 302.93 K
Thermal Expansion
6.0 µm/(m·K)
UNII
619P6J82AE;00072J7XWS
UN Number
NONH
Vapor Pressure
0 mm Hg @ 25 °C
Young's Modulus
103 GPa
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