Germanium Oxide
High-purity Germanium Oxide (GeO2, CAS 1310-53-8), 4N and 5N, supplied wholesale by Zyntex. Core dopant for optical fibers, raw material for infrared glasses and germanium metal, and PET catalyst. CoA and SDS with every lot.
Description
Germanium Oxide Product Overview
Germanium dioxide (GeO2) is a white crystalline powder that exists in a slightly soluble hexagonal form and an insoluble tetragonal form. It melts at about 1115°C and has a higher refractive index than silica.
The largest use is in fiber optics: adding GeO2 to the core of silica fibers raises the refractive index so that light stays confined in the core. Optical producers also use it in germanate glasses that transmit infrared light, and some PET producers use it as a polycondensation catalyst that gives very clear polymer. It is also the starting material for Germanium Metal.
High-purity grades go into phosphors and electronic materials, often alongside Silicon (powder). Germanium compounds must not be consumed as food or health products, because ingestion has been linked to serious kidney damage.
Key Applications of Germanium Oxide
Main application areas:
💡 Fiber Optics
Core dopant for silica optical fibers.
🔬 Infrared Optics
Raw material for germanate glasses.
🧴 PET Catalyst
Polycondensation catalyst for high-clarity PET.
⚙️ Germanium Metal
Starting material for germanium metal production.
Germanium Oxide Technical Specifications
| Parameter | Standard Value |
|---|---|
| Product Name | Germanium Oxide (Germanium (IV) Oxide / Germania) |
| CAS Number | 1310-53-8 |
| EC Number | 215-180-8 |
| Molecular Formula / Weight | GeO2 / 104.63 g/mol |
| Assay / Purity (GeO2) | Min 99.99% (4N Fiber Optic Grade) / 99.999% (5N Electronic Grade) |
| Appearance | White crystalline powder |
| Melting Point | 1,115°C (Hexagonal form) |
| Documents | CoA and SDS with every lot |
⚠️ Safety & Handling: May be harmful if swallowed or inhaled. Not for human consumption. Avoid dust formation and wear dust protection, gloves and eye protection. Store in tightly closed containers in a dry place. Always consult the Safety Data Sheet (SDS) for full classification and handling instructions.
Frequently Asked Questions
Which purity do you supply?
4N (99.99%) fiber optic grade and 5N (99.999%) electronic grade are available. Lot-specific impurity data is given on the CoA.
Can germanium dioxide be used in food or health products?
No. Ingestion of germanium compounds has been linked to serious kidney damage. The product is for industrial and technical use only.
How can I get a price and documents?
Prices depend on quantity, packaging and destination. Contact us with your required volume to receive a quotation together with the CoA and SDS.
