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483702

Sigma-Aldrich

Germanium(IV) oxide

≥99.99% trace metals basis

Synonym(s):

Germanium dioxide

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About This Item

Linear Formula:
GeO2
CAS Number:
1310-53-8
Molecular Weight:
104.64
EC Number:
215-180-8
MDL number:
MFCD00011030
UNSPSC Code:
12352303
PubChem Substance ID:
24871912
NACRES:
NA.23

assay

≥99.99% trace metals basis

form

powder

mp

>400 °C (lit.)

solubility

ethylene glycol: soluble

density

4.23 g/cm3

application(s)

battery manufacturing

SMILES string

O=[Ge]=O

InChI

1S/GeO2/c2-1-3

InChI key

YBMRDBCBODYGJE-UHFFFAOYSA-N

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General description

Germanium(VI) oxide, also known as germania or germanium dioxide, is a white or off-white powder. It is a refractory metal oxide with a high melting point (1,600 °C) and offers excellent chemical resistance. In addition, germanium(VI) oxide has excellent optoelectronic properties that have made it a valuable material in the semiconducting industry. It has a high refractive index of approximately 2.1, which is higher than that of many other semiconductor materials, and a low absorption coefficient. These properties make it useful for applications such as waveguides, antireflective coatings, and high-index contrast coatings. In addition, germanium(VI) has a high bandgap of about 3.1 eV coupled with relatively high transparency in the infrared region of the electromagnetic spectrum, which makes it useful for applications such as infrared detectors, LEDs, and solar cells.

application

Building block for inorganic nanowires. Used in the synthesis of ultra-high refractive index and ultra-low loss optical waveguides.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H302

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

Certificates of Analysis (COA)

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Jie Liang et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 23(71), 17879-17884 (2017-11-10)
The attractive properties of layered inorganic materials, which make them suitable for numerous applications in chemical industries and life sciences, originated from their crystalline framework structures. Here, we report a new layered germanate PKU-21, which was prepared by the hydrothermal
Rao, C.N.R., et al.
Journal of Materials Chemistry, 14, 440-440 (2004)
Imoto, K.
Optronics, 260, 116-116 (2003)
Xin-ben Zhang et al.
Optics express, 20(18), 19799-19805 (2012-10-06)
A GeO2 doped triangular-core photonic-crystal fiber (PCF) is designed and fabricated to allow the generation of a hollow beam through a nonlinear-optical transformation by femtosecond pulses at 1040 nm from a high power Yb-doped PCF laser oscillator. The hollow beam
E A Anashkina et al.
Optics express, 20(24), 27102-27107 (2012-11-29)
We report generation of femtosecond optical pulses tunable in the 1.6-2.5 μm range using GeO2-doped core silica-cladding fibers. Optical solitons with a duration of 80-160 fs have been measured by the FROG technique in the 2-2.3 μm range. To the
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