Germanium oxide
- CAS No.
- 1310-53-8
- Chemical Name:
- Germanium oxide
- Synonyms
- GeO2;GERMANIUM DIOXIDE;GERMANIUM(IV) OXIDE;Germanic acid;Germania;germanicacid;dioxogermane;germanic oxide;Germaniumdioxid;GERMANIUM OXIDE
- CBNumber:
- CB6412641
- Molecular Formula:
- GeO2
- Molecular Weight:
- 104.64
- MOL File:
- 1310-53-8.mol
- Modify Date:
- 2024/8/2 16:47:38
| Melting point | >400 °C(lit.) |
|---|---|
| Density | 6.239 g/mL at 25 °C |
| 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 |
| Merck | 14,4409 |
| Solubility Product Constant (Ksp) | pKsp: 57 |
| InChIKey | YBMRDBCBODYGJE-UHFFFAOYSA-N |
| LogP | 4.14 at 20℃ |
| CAS DataBase Reference | 1310-53-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Germanium dioxide(1310-53-8) |
| EPA Substance Registry System | Germanium oxide (GeO2) (1310-53-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302 | |||||||||
| Precautionary statements | P264-P270-P301+P312-P501 | |||||||||
| Hazard Codes | Xn | |||||||||
| Risk Statements | 22 | |||||||||
| Safety Statements | 22-24/25 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | LY5240000 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 2825 60 00 | |||||||||
| Toxicity | LD50 i.p. in rats: 750 mg/kg, Rosenfeld, Wallace, Arch. Ind. Hyg. Occup. Med. 8, 466 (1953) | |||||||||
| NFPA 704 |
|
Germanium oxide price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 483702 | Germanium(IV) oxide ≥99.99% trace metals basis | 1310-53-8 | 5G | ₹7696.58 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 483702 | Germanium(IV) oxide ≥99.99% trace metals basis | 1310-53-8 | 25G | ₹25741.85 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 483001 | Germanium(IV) oxide powder, 99.999% trace metals basis | 1310-53-8 | 10G | ₹11279.65 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 199478 | Germanium(IV) oxide (crystalline powder), 99.998% trace metals basis | 1310-53-8 | 10G | ₹7631.63 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 483001 | Germanium(IV) oxide powder, 99.999% trace metals basis | 1310-53-8 | 50G | ₹39478.78 | 2022-06-14 | Buy |
Germanium oxide Chemical Properties,Uses,Production
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.
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.
Germanium oxide Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Scientific OEM | +91-22- 2343 7546 / 2341 3094 | New Delhi, India | 1996 | 38 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Sisco Research Laboratories Pvt. Ltd. | +91-22-4268 5800 | Mumbai, India | 4317 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6160 | 58 | Inquiry |
| Triveni chemicals | 08048762458 | New Delhi, India | 6093 | 58 | Inquiry |
| LOBA CHEMIE PVT.LTD. | 91-22-6663 6699 | Mumbai, India | 3077 | 58 | Inquiry |
| Real Life Wellness Private Limited | 09839111033 | Uttar Pradesh, India | 1 | 58 | Inquiry |
| A. B. Enterprises | +91-8048077585 | Mumbai, India | 1396 | 58 | Inquiry |
| Silveon Enterprises | 08047625691 | Gujarat, India | 16 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| Scientific OEM | 38 |
| Otto Chemie Pvt. Ltd. | 58 |
| Alfa Aesar | 58 |
| Sisco Research Laboratories Pvt. Ltd. | 58 |
| Central Drug House(P) Ltd. | 58 |
| Triveni chemicals | 58 |
| LOBA CHEMIE PVT.LTD. | 58 |
| Real Life Wellness Private Limited | 58 |
| A. B. Enterprises | 58 |
| Silveon Enterprises | 58 |
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