CAS 7440-56-4 Germanium single crystal disc, 10mm (0.39in) dia, 1-3mm (0.04-0.1in) thick, (111) orientation, ±0.5°

NAVIGATION

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

PRICE INQUIRY

Catalog Number

ACM7440564-6

CAS Number

7440-56-4

Product Name

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

Category

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

Purity

99.9%, 99.99%, 99.999%

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

Application

The purpose of the Germanium single crystal disc, with a diameter of 10mm and thickness ranging from 1-3mm, oriented at (111) with a ±0.5° precision, is primarily centered around its semiconductor properties, particularly suitable for use in infrared optics and electronic components. Germanium's stable nature and compatibility with infrared applications make it an ideal choice for components like lenses and filters in infrared detection systems, as well as in the manufacture of high-performance electronic devices such as diodes and transistors. Its unique chemical properties place it between silicon and tin, allowing the formation of stable divalent and tetravalent compounds, which significantly contributes to its effectiveness in these applications.

Color/Form

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

Complexity

Covalently-Bonded Unit Count

EC Number

231-164-3

Electrical Resistivity

microhm-cm @ 20 °C

Exact Mass

73.921178g/mol

Formal Charge

HeatOfFusion

8.3 Cal/gm mole

Heat of Vaporization

3.5733X10+8 J/kmol @ melting point

Heavy Atom Count

MDL Number

MFCD00085310

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.

Precautionary Statements

P261-P305 + P351 + P338

Ratio

0.26

Rotatable Bond Count

Stability

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

UNII

619P6J82AE;00072J7XWS

UN Number

NONH

Vapor Pressure