Germanium oxide
- CAS No.
- 1310-53-8
- Chemical Name:
- Germanium oxide
- Synonyms
- GeO2;GERMANIUM DIOXIDE;GERMANIUM(IV) OXIDE;Germanic acid;Germaniumdioxid;Germania;germanicacid;dioxogermane;germanic oxide;GERMANIUM OXIDE
- CBNumber:
- CB6412641
- Molecular Formula:
- GeO2
Lewis structure
- Molecular Weight:
- 104.64
- MDL Number:
- MFCD00011030
- MOL File:
- 1310-53-8.mol
- MSDS File:
- SDS
| Melting point | >400 °C(lit.) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Density | 6.239 g/mL at 25 °C | ||||||||||||||
| bulk density | 1430kg/m3 | ||||||||||||||
| vapor pressure | 0Pa at 25℃ | ||||||||||||||
| refractive index | 1.99 | ||||||||||||||
| storage temp. | no restrictions. | ||||||||||||||
| solubility | ethylene glycol: soluble | ||||||||||||||
| form | Powder/Flake/Crystalline/Beads/Lump, Etc. | ||||||||||||||
| Specific Gravity | 6.239 | ||||||||||||||
| color | White | ||||||||||||||
| Water Solubility | 0.4 g/100 mL | ||||||||||||||
| Specific Heat Capacity | Cp(crystal): 0.5 J/(g·K), at 25℃ | ||||||||||||||
| Crystal Structure | Quartz type | ||||||||||||||
| crystal system | Three sides | ||||||||||||||
| Merck | 14,4409 | ||||||||||||||
| Solubility Product Constant (Ksp) | pKsp: 57 | ||||||||||||||
| Space group | P3221 | ||||||||||||||
| Lattice constant |
|
||||||||||||||
| Major Application | battery manufacturing | ||||||||||||||
| Cosmetics Ingredients Functions | ANTIMICROBIAL | ||||||||||||||
| InChI | 1S/GeO2/c2-1-3 | ||||||||||||||
| InChIKey | YBMRDBCBODYGJE-UHFFFAOYSA-N | ||||||||||||||
| SMILES | O=[Ge]=O | ||||||||||||||
| LogP | 4.14 at 20℃ | ||||||||||||||
| CAS DataBase Reference | 1310-53-8(CAS DataBase Reference) | ||||||||||||||
| EWG's Food Scores | 1 | ||||||||||||||
| FDA UNII | 5O6CM4W76A | ||||||||||||||
| NIST Chemistry Reference | Germanium dioxide(1310-53-8) | ||||||||||||||
| EPA Substance Registry System | Germanium oxide (GeO2) (1310-53-8) | ||||||||||||||
| UNSPSC Code | 12352303 | ||||||||||||||
| NACRES | NA.23 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302 | |||||||||
| Precautionary statements | P264-P270-P301+P312-P501 | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Faceshields, Gloves | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22 | |||||||||
| Safety Statements | 22-24/25 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | LY5240000 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 2825 60 00 | |||||||||
| Storage Class | 11 - Combustible Solids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral | |||||||||
| Hazardous Substances Data | 1310-53-8(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 i.p. in rats: 750 mg/kg, Rosenfeld, Wallace, Arch. Ind. Hyg. Occup. Med. 8, 466 (1953) | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Germanium oxide price More Price(51)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 199478 | Germanium(IV) oxide (crystalline powder), 99.998% trace metals basis | 1310-53-8 | 10g | $158 | 2026-04-30 | Buy |
| Sigma-Aldrich | 199478 | Germanium(IV) oxide (crystalline powder), 99.998% trace metals basis | 1310-53-8 | 25g | $330 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.12177 | Germanium(IV) oxide 99+ | 1310-53-8 | 2g | $88.2 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.12177 | Germanium(IV) oxide 99+ | 1310-53-8 | 5G | $134 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.12177 | Germanium(IV) oxide 99+ | 1310-53-8 | 25g | $547 | 2026-04-30 | Buy |
Germanium oxide Chemical Properties, Uses, Production
Uses
Germanium oxide has high refractive index and infrared transmission, for which it is used in industrial glasses. It also is used in preparation of high purity grade germanium.
Preparation
Germanium oxide is prepared by heating germanium with oxygen at elevated temperatures, or by hydrolysis of germanium(IV) halides:
GeCl4 + 2H2O → GeO2 + 4HCl
It also is prepared by oxidation of germanium(II) sulfide:
GeS + 2O2 GeO2 + SO2
The product obtained in the above reactions is in the form of hexagonal modification of GeO2.
Reactions
Germanium oxide is reduced to germanium metal when heated with hydrogen at 1,000°C:
GeO2 + 2H2 → Ge + 2H2O
When heated with germanium, the dioxide is reduced to monoxide, GeO:
GeO2 + Ge 2GeO
Treatment with hydrochloric acid yields germanium(IV) chloride:
GeO2 + 4HCl → GeCl4 + 2H2O
In a strongly acidic solution, its reaction with hydrogen sulfide yields an amorphous modification of germanium(IV) sulfide, GeS2.
Melting a mixture of germanium dioxide and metal oxides produces orthoand metagermanates of the corresponding metals. Aqueous solutions of germanate react with molybdic and tungstic acids forming heteropoly acids of varying compositions.
Description
Germanium oxide also called Germanium dioxide is the oxide of germanium, an inorganic compound, featuring the chemical formula GeO2. It is formed as a passivation layer on pure germanium after exposure to oxygen. Germanium dioxide generally has a low toxicity, but shows severe nephrotoxicity at higher doses. Germanium dioxide is still offered on the market in some questionable miracle therapies. Exposure to high doses of germanium dioxide can lead to germanium poisoning.
Chemical Properties
White powder, hexagonal, tetragonal,
and amorphous.
Uses
Germanium oxide can be used in Phosphors, transistors and diodes, infraredtransmitting glass.
Uses
When Germanium dioxide is 99.999% pure, it is used as a semiconductor in transistors, in diodes, and to make special infrared transmitting glass.
Uses
Germanium dioxide is used as an optical material for wide-angle lenses and in optical microscope objective lenses. It is used as a catalyst in the preparation of polyethylene terephthalate resin. Further, it is used as a feedstock for the manufacturing of phosphors and semiconductor materials. It is also used in transistors and diodes, and infrared transmitting glass.
Flammability and Explosibility
Not classified
Safety Profile
Poison by intraperitoneal route. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification Methods
The oxide (GeO2) is usually prepared by hydrolysing redistilled GeCl4 and igniting it in order to remove H2O and chloride. It can be further purified by dissolving in hot H2O (solubility is 4g/L cold) evaporating and drying the residual crystalline solid. When the soluble form (which is produced in H2O at 355o) is heated for 100hours, it is converted to the insoluble form. This form is stable at temperatures up to 1033o, and fusion at 1080o for 4hours causes complete de-vitrification and it reverts to the soluble form. [Müller & Blank J Am Chem Soc 46 2358 1924, Dennis & Laubengayer J Am Chem Soc 47 1945 1925, Laubengayer & Morton J Am Chem Soc 54 2303 1932, Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 706 1963.]
Structure and conformation
Germanium oxide ccurs in two crystalline and one amorphous modifications: (1) a tetragonal rutile form, refractive index 2.05, density 6.24 g/cm3 at 20°C. (2) white hexagonal quartz modification, refractive index 1.735, density 4.70 g/cm3 at 18°C, and (3) a glassy amorphous form, refractive index 1.607, density 3.64 g/cm3 at 20°C. The tetragonal form is practically insoluble in water, while the hexagonal and the amorphous modifications have low solubilities; 0.45 and 0.52% respectively, at 25°C. Aqueous solutions are acidic due to formation of metagermanic acid, H2GeO3. Hexagonal modification converts to a tetragonal crystal system when heated at 350°C in water under pressure. Both crystalline forms convert to a glass-like amorphous GeO2 when heated at 1,100°C.
Toxics Screening Level
The Initial Threshold Screening Level (ITSL) for germanium dioxide is 7 μg/m3 based on an annual averaging time.
Germanium oxide Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Wuhan FengyaoTonghui Chemical Products Co., Ltd. | 027-87466105 15377573527 | 2678564200@qq.com | China | 17968 | 58 |
| Tianjin Baima Technology Co., LTD | 02288195255 15620955089 | 362698781@qq.com | China | 783 | 58 |
| Sichuan HPM Co.,LTD | 18180503237 | 35901044@qq.com | China | 57 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| INTATRADE GmbH | +49 3493/605464 | sales@intatrade.de | Germany | 3563 | 66 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
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View Latest Price from Germanium oxide manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-14 | Germanium Oxide (GeO2)
1310-53-8
|
1kg | 99.9%；99.99%；99.999% | 20 tons | Shanghai Sheeny Metal Materials Co.,Ltd | ||
 |
2026-03-20 | Sodium Saccharin
1310-53-8
|
$1.00 | 1kg | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-12-24 | Germanium oxide
1310-53-8
|
1KG | 99.0% | 10000KG | Shaanxi Dideu Medichem Co. Ltd |
-
- Germanium Oxide (GeO2)
1310-53-8
- 99.9%；99.99%；99.999%
- Shanghai Sheeny Metal Materials Co.,Ltd
-
- Sodium Saccharin
1310-53-8
- $1.00
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Germanium oxide
1310-53-8
- 99.0%
- Shaanxi Dideu Medichem Co. Ltd
