Germanium Metal




Product Code Available Product Forms Request A Quote
GE-E-05-I (5N) 99.999% Germanium Ingot Request
GE-E-05-L (5N) 99.999% Germanium Lump Request
GE-E-05-P (5N) 99.999% Germanium Powder Request
GE-E-05-ST (5N) 99.999% Germanium Sputtering Target Request
GE-E-05-WSX (5N) 99.999% Germanium Wafer Request


Molecular Weight 72.61
Appearance Black Lump
Melting Point 937.4 °C
Boiling Point 2830 °C
Density 5.323 g/cm3
Tensile Strength N/A
Thermal Conductivity 0.602 W/cm/K @ 302.93 K
Electronegativity 1.8 Paulings
Specific Heat 0.077 Cal/g/K @ 25 °C
Heat of Vaporization 68 K-cal/gm atom at 2830 °C
Heat of Fusion 8.3 Cal/gm mole

Health & Safety Info  |  MSDS / SDS

Signal Word Warning
Hazard Statements H315-H319-H335
Hazard Codes Xi
Risk Codes 36/37/38
Safety Statements 26-36/39
RTECS Number LY5200000
Transport Information N/A
WGK Germany 3
Globally Harmonized System of Classification and Labelling (GHS) N/A


Germanium Metal is available as disc, granules, ingot, pellets, pieces, powder, rod, wire, and sputtering target. See safety data and research below and pricing/lead time above. Ultra high purity and high purity forms also include metal powder, submicron powder and nanoscale, quantum dots, targets for thin film deposition, pellets for evaporation and single crystal or polycrystalline forms. Elements can also be introduced into alloys or other systems as fluorides, oxides or chlorides or as solutions. Germanium metal is generally immediately available in most volumes. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.



Chemical Identifiers

Formula Ge
CAS 7440-56-4
Pubchem CID 6326954
MDL MFCD00085310
EC No. 231-164-3
Beilstein Registry No. N/A
InchI Identifier InChI=1S/Ge

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

Related Products

GeSee more Germanium products. Germanium (atomic symbol: Ge, atomic number: 32) is a Block P, Group 14, Period 4 element with an atomic weight of 72.63. The number of electrons in each of germanium's shells is 2, 8, 18, 4 and its electron configuration is [Ar] 3d10 4s2 4p2. The germanium atom has a radius of 122.5 pm and a Van der Waals radius of 211 pm. Germanium was first discovered by Clemens Winkler in 1886. In its elemental form, germanium is a brittle grayish white semi-metallic element. Germanium is too reactive to be found naturally on Earth in its native state. It is commercially obtained from zinc ores and certain coals. It is also found in argyrodite and germanite. It is used extensively as a semiconductor in transitors, solar cells, and optical materials. Other applications include acting an alloying agent, as a phosphor in fluorescent lamps, and as a catalyst. The name Germanium originates from the Latin word "Germania" meaning "Germany," For more information on germanium, including properties, safety data, research, and American Elements' catalog of germanium products, visit the Germanium element page.


Recent Research & Development for Germanium

  • Single-Molecule Conductance in Atomically Precise Germanium Wires. Su TA, Li H, Zhang V, Neupane M, Batra A, Klausen RS, Kumar B, Steigerwald ML, Venkataraman L, Nuckolls C. J Am Chem Soc. 10/21/2015
  • Direct oriented growth of armchair graphene nanoribbons on germanium. Jacobberger RM, Kiraly B, Fortin-Deschenes M, Levesque PL, McElhinny KM, Brady GJ, Rojas Delgado R, Singha Roy S, Mannix A, Lagally MG, Evans PG, Desjardins P, Martel R, Hersam MC, Guisinger NP, Arnold MS. Nat Commun. 9/30/2015
  • Germanium-doped carbon dots as a new type of fluorescent probe for visualizing the dynamic invasions of mercury(ii) ions into cancer cells. Yuan YH, Li RS, Wang Q, Wu ZL, Wang J, Liu H, Huang CZ. Nanoscale. 9/30/2015
  • Alkaline-Earth-Metal-Induced Liberation of Rare Allotropes of Elemental Silicon and Germanium from N-Heterocyclic Metallylenes. Blom B, Said A, Szilvási T, Menezes PW, Tan G, Baumgartner J, Driess M. Inorg Chem. 9/28/2015
  • Investigation of germanium quantum-well light sources. Fei ET, Chen X, Zang K, Huo Y, Shambat G, Miller G, Liu X, Dutt R, Kamins TI, Vuckovic J, Harris JS. Opt Express. 9/26/2015
  • Laser induced periodic surface structure formation in germanium by strong field mid IR laser solid interaction at oblique incidence. Austin DR, Kafka KR, Trendafilov S, Shvets G, Li H, Yi AY, Szafruga UB, Wang Z, Lai YH, Blaga CI, DiMauro LF, Chowdhury EA. Opt Express. 9/24/2015
  • Potassium, Cesium, and Ammonium Peroxogermanates with Inorganic Hexanuclear Peroxo Bridged Germanium Anion Isolated from Aqueous Solution. Medvedev AG, Mikhaylov AA, Churakov AV, Vener MV, Tripol'skaya TA, Cohen S, Lev O, Prikhodchenko PV. Inorg Chem. 9/23/2015
  • Biallelic and Genome Wide Association Mapping of Germanium Tolerant Loci in Rice (Oryza sativa L.). Talukdar P, Douglas A, Price AH, Norton GJ. PLoS One. 9/21/2015
  • High Thermoelectric Figures of Merit of Germanium Antimony Tellurides with Kinetically Stable Cobalt Germanide Precipitates. Fahrnbauer F, Souchay D, Wagner G, Oeckler O. J Am Chem Soc. 7/28/2015
  • Aligned Growth of Hexagonal Boron Nitride Monolayer on Germanium. Yin J, Liu X, Lu W, Li J, Cao Y, Li Y, Xu Y, Li X, Zhou J, Jin C, Guo W. Small. 7/4/2015

Free Test Sample Program

We recognize many of our customers are purchasing small quantities directly online as trial samples in anticipation of placing a larger future order or multiple orders as a raw material for production. Since our primary business is the production of industrial quantities and/or highly consistent batches which can be used for commercial production and purchased repeatedly in smaller quantity, American Elements offers trial samples at no charge on the following basis. Within 6 months of purchasing materials directly online from us, you have the option to refer back to that order and advise that it is the intention of your company, institution or lab to either purchase a larger quantity, purchase the material in regular intervals or purchase more on some other basis.

We will then evaluate your future needs and assuming the quantity or number of future purchases qualify, we will fully credit your purchase price with the next order. Because of the many variables in the quantity and number of orders you may place, it is impossible to evaluate whether your future order(s) will qualify for this program prior to your placing your next order. Please know American Elements strongly desires to make this free sample program available to you and will make every effort to do so once your next order is placed.