CAS 7440-56-4 Germanium single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (100) orientation, ±0.5°

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Germanium single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (100) orientation, ±0.5°

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Catalog Number

ACM7440564-2

CAS Number

7440-56-4

Product Name

Germanium single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (100) orientation, ±0.5°

Structure

Category

3D Printing Materials; Single Crystals

Description

PelletsLargeCrystals, WetSolid, OtherSolid

IUPAC Name

germanium

Molecular Weight

72.63g/mol

Molecular Formula

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

Application

The Germanium single crystal disc, with its precise dimensions and (100) orientation, is engineered to harness the unique properties of germanium for advanced applications. This product serves as a vital component in the electronics industry, particularly in the manufacturing of rectifying devices such as germanium diodes and transistors. Its exceptional capability to transmit infrared radiation makes it indispensable in optical systems, including lenses and filters for infrared detection and guidance systems. Furthermore, the disc's integration into specialized alloys and glass production enhances its versatility, allowing for the creation of materials with superior refractivity and dispersion qualities, critical for wide-angle camera lenses and high-precision microscopes.

Color/Form

GRAYISH-WHITE, LUSTROUS, BRITTLE METALLOID; DIAMOND-CUBIC STRUCTURE WHEN CRYSTALLINE

Complexity

Covalently-Bonded Unit Count

EC Number

231-164-3

Exact Mass

73.921178g/mol

Formal Charge

Heat of Vaporization

3.5733X10+8 J/kmol @ melting point

Heavy Atom Count

MeSH Entry Terms

Germanium

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.

Rotatable Bond Count

Stability

RELATIVELY STABLE, UNAFFECTED BY AIR, BECOMES OXIDIZED ABOVE 600 °C

UNII

619P6J82AE;00072J7XWS

Vapor Pressure

0 mm Hg @ 25 °C

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