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199478

Sigma-Aldrich

Germanium(IV) oxide

(crystalline powder), 99.998% trace metals basis

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Synonym(s):
Germanium dioxide
Linear Formula:
GeO2
CAS Number:
Molecular Weight:
104.64
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

assay

99.998% trace metals basis

form

(crystalline powder)

mp

>400 °C (lit.)

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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This Item
483001208450483702
Germanium(IV) oxide (crystalline powder), 99.998% trace metals basis

199478

Germanium(IV) oxide

Germanium(IV) oxide powder, 99.999% trace metals basis

483001

Germanium(IV) oxide

Germanium(IV) chloride 99.99% trace metals basis

208450

Germanium(IV) chloride

Germanium(IV) oxide ≥99.99% trace metals basis

483702

Germanium(IV) oxide

assay

99.998% trace metals basis

assay

99.999% trace metals basis

assay

99.99% trace metals basis

assay

≥99.99% trace metals basis

density

4.23 g/cm3

density

4.23 g/cm3

density

1.844 g/mL at 25 °C

density

4.23 g/cm3

mp

>400 °C (lit.)

mp

>400 °C (lit.)

mp

−49.5 °C (lit.)

mp

>400 °C (lit.)

application(s)

battery manufacturing

application(s)

battery manufacturing

application(s)

-

application(s)

battery manufacturing

Application

Germanium(IV) oxide can be used:
  • To prepare glasses for nuclear radiation shielding and ultra-broadband amplification. For example, germanium and bismuth oxide glasses.
  • As a precursor to synthesize GeO2/TiO2 nanocomposites that can be used for the photocatalysis of organic pollutants.
  • As an anode material for lithium-ion batteries due to its high lithium storage capacity, thermostability, and large volume expansion during the charge–discharge process.

pictograms

Exclamation mark

signalword

Warning

hcodes

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


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Zita Oláh et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 149, 75-82 (2019-04-29)
The radiochemical separation of n.c.a. arsenic on its own or for radio-labelling purposes usually involves the issue of reducing arsenic(V). Numerous approaches for reducing pentavalent arsenic have been examined. A novel HPLC method has also been presented for accessing the
P. M. Lambert
Inorganic chemistry, 37(6), 1352-1357 (2001-10-24)
The gel chemistry of germanium is explored through the formation and composition of a hydrous metal oxide precursor gel used in the preparation of the HfGeO(4) and HfGeO(4):Ti X-ray phosphors. The enhanced solubility of hexagonal GeO(2) in dilute ammoniacal solutions
Sarah L Sewell et al.
Dalton transactions (Cambridge, England : 2003), (29)(29), 3857-3865 (2008-07-17)
Biomimetic synthesis is emerging as an advantageous alternative to the harsh synthetic conditions traditionally used in metal oxide syntheses techniques. Silaffins, proteins from the C. fusiformis diatom, form silica in an aqueous environment under benign conditions. Amine terminated PAMAM and
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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