Germanium

Germanium Oxide

CAS #: 1310-53-8
Molecular Formula: GeO2
EC No.: 215-180-8

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Product Details

Germanium oxide is an inorganic compound with the molecular formula GeO2. It is the dioxide of germanium and has the same electron formula as carbon dioxide. It is a white powder or colorless crystal, with hexagonal, tetragonal crystal systems or amorphous solids. Hexagonal crystal system: Relative density 4.228, melting point (1115±4)℃. Tetragonal crystal system: Relative density 6.239, melting point (1086±5)℃. Insoluble in water and hydrochloric acid; It dissolves in an alkaline solution to form germanate.

Applications:

1.It is used for making germanium ingots and organic germanium.

2. It is used for making bismuth germanate crystals.

3. It is used for making catalysts.

4. It is used for making phosphors.

5. It is used for making germanium glass, etc.

Product Series

Product

Product Code

Security Data

Technical Data

Germanium Oxide 99.99%

ET-Ge-01

Germanium(IV) oxide.pdf

Germanium Oxide GeO2 99.99%.pdf

Germanium Oxide 99.999%

ET-Ge-02

Germanium Oxide GeO2 99.999%.pdf

Properties (Theoretical)

Molecular Formula	GeO₂
Molecular Weight	104.6 g/mol
Appearance	White Powder
Melting Point	1,115° C (2,039° F)
Boiling Point	N/A
Density	6.239 g/cm3
Precise Quality	91.9317 g/mol
Single Isotope Mass	105.911007 Da

Health & Safety Information

Signal Word	Warning
Risk Statement	H302-H332
Dangerous Code	Xn
Preventive Instructions	P261-P264-P270-P301+P310-P501
Flash Point	N/A
Risk Code	22
Safety Statement	N/A
RTECS Number	LY5240000
Transportation Information	NONH
WGK Germany	1
GHS Pictogram

Packaging Specifications:

Standard packaging: 50 kg/drum, 500 kg/pallet, ton bags

Sample packaging: 500 g/bag, 1 kg/bottle

Germanium Oxide

Germanium dioxide has two variants: insoluble and soluble. The former is a colorless tetragonal prismatic with a melting point of 1115±4℃, a relative density of 6.23925, and a refractive index of 1.99. It is insoluble in water and acid or alkali solutions, and only melts with ten times the amount of NaOH at 550℃. The latter is a colorless rhombic crystal of the hexagonal crystal system, with a melting point of 1115±4℃, a relative density of 4.22825, and a refractive index of 1.695. It is readily soluble in water and soluble in acids and alkalis. The transformation temperatures of the two variants are 1033℃. The transformation between dicrystal forms is very slow. There is also a colorless and transparent glassy substance, which is obtained by rapidly cooling molten germanium dioxide. Hexagonal crystals and glassy substances can dissolve in hydrochloric acid to form germanium tetrachloride and in hydrofluoric acid to form germanium hexafluoride. The tetragonal crystal has inert chemical properties and is only soluble in excess molten alkali and molten sodium carbonate.

The hydrolysis method of germanium tetrachloride involves adding 6.5 times the volume of distilled water to germanium tetrachloride, stirring and leaving it for one day and one night to form germanium dioxide precipitate. Then, wash it with cold water until the wash solution contains no Cl-. Germanium dioxide products are obtained by drying at 200℃. Its GeCl4+2H2O→GeO2+4HCl

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