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Germanium Granules

Product catalog summary

Company Information:
Umicore Electro-Optic Materials is ISO certified with ISO 9001 and ISO 14001 standards. The company is located at Watertorenstraat 33, B – 2250 Olen, Belgium. Contact details include phone: +32-14 24 55 97 and fax: +32-14 24 55 34. More information can be found on their website: www.optics.umicore.com.

Product Overview:
The document provides technical specifications for Germanium Granules, identified by the code GeGr/0403.

Physical Data:

Symbol: Ge
Atomic number: 32
Atomic weight: 72.61 g/mol
Density at 298 K: 5323 kg/m³
Melting point: 1210.55 K
Boiling point: 3093 K
Heat of fusion: 36.945 kJ/mol
Heat of sublimation: 374.5 kJ/mol
Vapour pressure at 298 K: 3.546 x 10^-54 Pa
Specific heat (273-373 K): 310 J/kg.K

Analysis:

Crystal structure: Amorphous
Ge content: > 99.9999%
Impurity content: O (bonded) ≤ 500 ppb, Fe ≤ 40 ppb, C ≤ 150 ppb

Standard Granule Diameter:
1 mm – 5 mm

Formats and Packing:
The product is available in polyethylene bottles.

Additional Information:

CAS registry ID: 7440-56-4
Product aspect: grey powder

References:
Data is referenced from Landolt-Bornstein and S.M. Sze's publications.

Catalog excerpts

Germanium Granules GeGr/0403 Physical Symbol Data Atomic number Atomic weight Density (298 K) Melting point Boiling point Heat of fusion Heat of sublimation Vapour pressure (298 K) Specific heat (273-373 K) Crystal structure Ge content Impurity content O (bonded) Fe C Standard granule diameter Polyethylene bottle g/mol 3 1 kg/m ( ) 1 K() K kJ/mol (1) kJ/mol (1) Pa (1) J/kg.K (2) % ppb ppb ppb Formats and Packing Additional CAS registry ID: 7440-56-4 Information Product aspect: grey powder Landolt-Bornstein, Numerical data and functional relationships in Science and Technology Group III Vol. 17, 1982, ED. Springer Verlag S.M. Sze, Physics of Semiconductor devices 2nd edition 1981, ED. John Wiley & Sons; MM.F. Morin, J. Maita, Phys.Rev., Vol. 94 N°q6, p. 1525, 1954 Umicore Electro-Optic Materials is ISO certified: ISO 9001 – ISO 14001 Umicore Electro-Optic Materials Watertorenstraat 33, B – 2250 Olen, BELGIUM [email protected] www.optics.umicore.com

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