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or its derivatives, look no further than LEAPChem
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Basic
Information of Germanium dioxide
Chemical Name: Germanium dioxide
Cas No.: 1310-53-8
Molecular Formula: GeO2
Chemical Structure:
Germanium dioxide,
also called germanium oxide and germania, is an inorganic compound with the
chemical formula GeO2. It is the main commercial source of germanium. It also
forms as a passivation layer on pure germanium in contact with atmospheric
oxygen.
The refractive index (1.7) and optical
dispersion properties of germanium dioxide makes it useful as an optical
material for wide-angle lenses, in optical microscope objective lenses, and for
the core of fiber-optic lines. See Optical fiber for specifics on the manufacturing
process. Both Germanium and its glass oxide, GeO2 are transparent to the
infrared spectrum. The glass can be manufactured into IR windows and lenses,
used for night-vision technology in the military, luxury vehicles, and
Thermographic cameras. GeO2 is preferred over other IR transparent glasses
because it is mechanically strong and therefore preferred for rugged military
usage.
A mixture of silicon dioxide and germanium
dioxide ("silica-germania") is used as an optical material for
optical fibers and optical waveguides. Controlling the ratio of the elements
allows precise control of refractive index. Silica-germania glasses have lower
viscosity and higher refractive index than pure silica. Germania replaced
titania as the silica dopant for silica fiber, eliminating the need for
subsequent heat treatment, which made the fibers brittle.
Germanium dioxide is also used as a
catalyst in production of polyethylene terephthalate resin, and for production
of other germanium compounds. It is used as a feedstock for production of some
phosphors and semiconductor materials.
Germanium dioxide is used in algaculture as
an inhibitor of unwanted diatom growth in algal cultures, since contamination
with the comparatively fast-growing diatoms often inhibits the growth of or
outcompetes the original algae strains. GeO2 is readily taken up by diatoms and
leads to silicon being substituted by germanium in biochemical processes within
the diatoms, causing a significant reduction of the diatoms' growth rate or
even their complete elimination, with little effect on non-diatom algal
species. For this application, the concentration of germanium dioxide typically
used in the culture medium is between 1 and 10 mg/l, depending on the stage of
the contamination and the species.
LEAPChem is continually expanding its scope
within the pharmaceutical chemicals industry. Our passion for professional
development enables us to accommodate our customers’ chemical requirements, and
to distribute chemicals with applications that span several classes and
functions.
If you are interested in Germanium dioxide, click here to send an inquiry!
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References:
https://en.wikipedia.org/wiki/Germanium_dioxide
https://www.ncbi.nlm.nih.gov/pubmed/17193468
https://www.ncbi.nlm.nih.gov/pubmed/22947505
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