Description
Specifications Table
Product Name – Germanium(IV) oxide, Puratronic|r, 99.999% (metals basis)
Quantity/Pack Size – 5g, 25g, 100g
Form – Powder
Grade – Puratronic (99.999% metals basis)
Application – Semiconductor fabrication, optical coatings, catalyst research, high-purity chemical synthesis
Product Overview
Germanium(IV) oxide in Puratronic grade (99.999% metals basis) is an ultra-high-purity compound designed for demanding laboratory and industrial applications where trace impurities can compromise results. This white, amorphous powder exhibits exceptional thermal stability and optical transparency, making it a critical material in advanced material science, electronics, and photonics. The Puratronic designation ensures minimal metallic contaminants (≤10 ppm total impurities), guaranteeing consistency in thin-film deposition, dopant applications, and precision chemical reactions. Its low hygroscopicity and high refractive index (1.99–2.07) further enhance its utility in IR optics and glass manufacturing. The material is synthesized via controlled oxidation processes to maintain stoichiometric purity, with particle size distribution optimized for uniform dispersion in solvents or matrices. Compatible with most inorganic acids and alkalis under controlled conditions, it serves as a reliable precursor for germanium-based nanomaterials, including quantum dots and aerogels. Storage under inert atmosphere is recommended to prevent moisture absorption, though the oxide remains stable under standard lab conditions for extended periods.
FAQs
1. What is the difference between Puratronic and standard-grade germanium(IV) oxide?
Puratronic grade guarantees 99.999% purity with ≤10 ppm metallic impurities, while standard grades typically range between 99.9–99.99% and may contain higher levels of iron, aluminum, or silicon contaminants that affect performance in sensitive applications.
2. Can this oxide be used directly for thin-film deposition without further purification?
Yes, the 99.999% purity eliminates the need for additional purification steps in most PVD or CVD processes, though pre-deposition annealing may be required depending on the specific substrate and deposition method.
3. What solvents are compatible with Germanium(IV) oxide for solution-based applications?
It dissolves readily in concentrated hydrochloric acid and alkaline solutions (e.g., NaOH/KOH) but remains insoluble in water and organic solvents like ethanol or acetone without prior conversion to soluble germanates.
4. How does the particle size distribution impact its use in optical coatings?
The sub-micron particle size (typically 0.5–5 µm) ensures smooth film formation with minimal scattering losses, critical for AR coatings and IR-transparent layers, though agglomeration may occur if not properly dispersed.
5. What precautions should be taken when handling this material to maintain its purity?
Use PTFE or quartz tools to avoid metallic contamination, store in a desiccator under argon/nitrogen, and minimize exposure to humid environments to prevent hydrolysis, which can introduce hydroxyl impurities.
