Indium Corp. GeO 2 Germanium Dioxide

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Indium Corp. GeO₂ Germanium Dioxide
Categories:	Ceramic; Oxide
Material Notes:	Germanium dioxide is a white powder that is manufactured in both crystalline and amorphous forms. Germanium dioxide's refractive index (1.7) and its optical dispersion properties are useful for making wide-angle lenses and optical microscope objective lenses. It is transparent to infrared light. Germanium dioxide is also used as a catalyst in the production of polyethylene terephthalate (PET) resin and in the production of other germanium compounds, as well as some phosphors and semiconductor materials. Characteristics: Synonyms: Germanium (IV) Oxide, GeO2 CAS Number: 1310-53-8 EC Number: 215-180-8 RTECS: LY5240000 Purity: 99.999% Appearance/Form: White powder Crystal structure: Hexagonal Solubility: Soluble in Alkalis. Slightly Soluble in Acids. Slightly soluble in Water. Information Provided by Indium Corporation
Key Words:	GeO2, Germanium Oxide
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Physical Properties	Original Value	Comments

Bulk Density	1.30 - 1.70 g/cc	apparent
Loss On Ignition	<= 3.0 %
Molecular Weight	104.61 g/mol
Maximum Moisture Content	<= 1.0	Typical, LOD
	<= 2.0	LOD

Chemical Properties	Original Value	Comments
Ionic Impurities - Cl (Chloride)	<= 500 ppm

Thermal Properties	Original Value	Comments
Melting Point	1115 °C

Optical Properties	Original Value	Comments
Refractive Index	1.70
IR Transmittance	90 %	transparent; thickness not quantified

Component Elements Properties	Original Value	Comments
Aluminum, Al	<= 0.00010 %	Typical
	<= 0.00030 %	Max
Cobalt, Co	<= 0.00010 %	Typical
	<= 0.00030 %	Max
Copper, Cu	<= 0.00010 %	Typical
	<= 0.00030 %	Max
Germanium, Ge	69.434 %	Theoretical
Iron, Fe	<= 0.00020 %	Typical
	<= 0.00030 %	Max
Nickel, Ni	<= 0.00010 %	Typical
	<= 0.00030 %	Max
Trace Metals	<= 0.00030 %	Total combined metals, typical
	<= 0.0010 %	Total combined metals, max
Zinc, Zn	<= 0.00010 %	Typical
	<= 0.00030 %	Max

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NNIN921 / 131560

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