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Germane gas (GeH4) is a colorless, flammable, and highly toxic gas. It is composed of one germanium atom bonded to four hydrogen atoms. Germane is a member of the group 14 elements on the periodic table, which includes carbon, silicon, tin, and lead. Here are some key points about germane gas:
Properties: Germane gas possesses several important properties:
Flammability: Germane is a flammable gas and can form explosive mixtures with air. It should be handled with extreme caution and stored away from ignition sources.
Toxicity: Germane is highly toxic and can cause severe health effects. Inhalation or exposure to germane can lead to respiratory irritation, dizziness, headache, and even death in high concentrations.
Reactivity: Germane is reactive and can undergo chemical reactions with various substances. It can decompose at high temperatures or in the presence of certain catalysts.
Production: Germane gas can be produced through several methods, including:
Reaction of Germanium with Hydrogen: Germane can be synthesized by the direct reaction of germanium metal with hydrogen gas at high temperatures.
Chemical Vapor Deposition (CVD): Germane can be formed as a byproduct during the deposition of thin films of germanium using chemical vapor deposition techniques.
Uses: Germane gas has some specialized applications, including:
Semiconductor Manufacturing: Germane is used in the production of semiconductors, particularly in the deposition of germanium-containing thin films for electronic and optoelectronic devices.
Research and Development: Germane gas is employed in research laboratories for various purposes, such as studying germanium chemistry, investigating thin film growth processes, and exploring new materials and applications.
Safety Considerations: Germane gas is highly toxic and poses significant health and safety risks. Proper handling, storage, and use of germane should follow stringent safety protocols and guidelines. It is important to have adequate ventilation, use personal protective equipment, and ensure that appropriate safety measures are in place when working with germane gas.
Due to its toxicity and flammability, germane gas should only be handled by trained professionals in controlled laboratory or industrial settings.
Basic Info.
| Model NO. | GeH4 | Constituent | Germane 99.999% |
| Grade Standard | Electronic Grade | Chemical Property | Inflammable Gas |
| Trademark | CMC | Transport Package | 44L |
| Specification | 99.999 | Origin | China |
| Germane - ( GeH4 ) | |||
| Description | |||
| Germane is a flammable , colorless gas with characteristic pungent ,nauseating odor .Its boiling point is - 90°C. It is unstable and can decompose explosively when heated to greater than 330°C. | |||
| Specifications | |||
| Purity , % | 99.999 | ||
| Oxygen + Argon | ≤0.5 ppmv | ||
| Nitrogen | ≤2.0 ppmv | ||
| Carbon Dioxide | ≤2.0 ppmv | ||
| Carbon Monoxide | ≤1.0 ppmv | ||
| Methane | ≤1.0 ppmv | ||
| Water | ≤1.0 ppmv | ||
| Chlorogermanes | ≤5.0 ppmv | ||
| Digermane* | ≤20.0 ppmv | ||
| Germoxanes | ≤5.0 ppmv | ||
| Hydrogen* | ≤50.0 ppmv | ||
| Trigermane | ≤1.0 ppmv | ||
| Ship | |||
| DOT Shipping Name | Germane | ||
| DOT Classification | 2.3 | ||
| DOT Label | Toxic Gas, Flammable Gas | ||
| UN Number | UN2192 | ||
| CAS No. | 7782-65-2 | ||
| CGA/DISS/JIS | 350/632/W22-14L | ||
| Shipped as | Compressed Gas | ||
| Technical Information | |||
| Cylinder State @ 21.1°C | Gas | ||
| Flammable Limits In Air | 0.5-100% | ||
| Auto Ignition Temperature (°C ) | 54.4 | ||
| Molecular Weight (g/mol) | 76.62 | ||
| Specific gravity (air =1) | 2.65 | ||
| Critical Temperature ( °C ) | 34.8 | ||
| Critical Pressure ( psig ) | |||
| Applications | |||
| Used for the deposition of epitaxial and amorphous silicon - germanium alloys , and as a component for PECVD of ( Si, Ge )O2 films with controllable refractive index for photonic . | |||
