GeO2
Germanium dioxide
CAS: 1310-53-8
Molecular Formula: GeO2
GeO2 - Names and Identifiers
| Name | Germanium dioxide |
| Synonyms | GeO2 Germania dioxogermane germanicacid Germanic acid Germaniumdioxid Germanium dioxide Germanium(IV) oxide Germanic oxide (crystalline) germanium(iv) oxide, puratronic |
| CAS | 1310-53-8 |
| EINECS | 215-180-8 |
| InChI | InChI=1/GeO2/c2-1-3 |
| InChIKey | YBMRDBCBODYGJE-UHFFFAOYSA-N |
GeO2 - Physico-chemical Properties
| Molecular Formula | GeO2 |
| Molar Mass | 104.64 |
| Density | 6.239g/mLat 25°C |
| Melting Point | >400°C(lit.) |
| Boling Point | 1200℃ |
| Water Solubility | 0.4 g/100 mL |
| Solubility | ethylene glycol: soluble |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | White powder |
| Specific Gravity | 6.239 |
| Color | White |
| Solubility Product Constant(Ksp) | pKsp: 57 |
| Merck | 14,4409 |
| Storage Condition | no restrictions. |
| Refractive Index | 1.99 |
| MDL | MFCD00011030 |
| Physical and Chemical Properties | White powder, hexagonal, tetragonal or amorphous solid. Hexagonal system: Relative density 4.228, melting point (1115±4)℃. Tetragonal system: Relative density 6.239, melting point (1086±5)℃. Do not dissolve in water, hydrochloric acid; Soluble in alkali solution to produce germanate. |
| Use | For germanium, also used in the electronics industry |
GeO2 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 22 - Harmful if swallowed |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| 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) |
GeO2 - Reference
| Reference Show more | 1. Wang Yuning, Zhang Kui, Jiang Qi, et al. Synthesis and Anti-inflammatory Activity of Puerarin-Germanium Complex [J]. Journal of Harbin University of Commerce: Natural Science Edition, 2015(2):149-152. |
GeO2 - Nature
Open Data Verified Data
white powder, melting point 1115 °c. Hexagonal, tetragonal or amorphous solid. Hexagonal crystal relative density of 4. 228, melting point (1115 4)℃. Tetragonal has a relative density of 239 and a melting point of (1086±5) °c. Germanium dioxide is dissolved in alkali to form a salt of germanium.
Last Update：2025-06-10 22:55:16
GeO2 - Preparation Method
Open Data Verified Data
germanium tetrachloride hydrolysis method: 6.5-fold volume of distilled water was added to germanium tetrachloride, and the mixture was stirred for one day and night to produce a precipitate of germanium dioxide, which was washed with cold water until the washing liquid contained no CI. The germanium dioxide product was obtained by drying at 200 °c.
Last Update：2025-06-10 22:55:16
GeO2 - Introduction
Germanium dioxide is an oxide of germanium and is the main material for the production of metallic germanium. It is the basic material for the production of other germanium products. Non-toxic, non-radioactive. Water solubility: 0.4g/100 mL
Last Update：2022-10-16 17:13:13
GeO2 - Application
Open Data Verified Data
for the production of high-purity germanium, chemical catalysts, optical fiber with four germanium chloride, bismuth germanium crystal.
Last Update：2025-08-19 16:24:40
GeO2 - Safety
Open Data Verified Data
glass bottle packaging, each bottle of 25kg net weight. Should be stored in a ventilated, dry warehouse. Packaging should be sealed, moisture-proof, not with the alkali, acid contact. When loading and unloading, the glass bottle should be handled lightly to prevent rupture. Fire, can use water, sand, all kinds of fire extinguishing. Toxicity and protection: dry germanium oxide on the skin without irritation, but have a stimulating effect on the conjunctiva. The maximum allowable concentration in air is 2mg/m3. The effects of aerosols of germanium and germanium oxide on the respiratory organs and skin are prevented during operation. Pay attention to wearing labor protection products.
Last Update：2025-06-10 22:55:16
GeO2 - Reference Information
| LogP | 4.14 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | dry germanium oxide has no irritating effect on skin, but has irritating effect on conjunctiva. The maximum allowable concentration in air is 2mg/m3. During operation, the aerosol of germanium and germanium oxide should be prevented from acting on respiratory organs and skin. Pay attention to wearing labor protection articles. |
| use | used to make metallic germanium, also used as spectral analysis and semiconductor materials. It is used to make germanium and also in the electronic industry It is used to formulate raw materials such as germanium ingot, organic germanium, bismuth germanate crystal, catalyst, germanium tetrachloride for optical fiber, phosphor and germanium glass. |
| production method | germanium tetrachloride hydrolysis method 6.5 times the volume of distilled water is added to germanium tetrachloride, stirred and placed for one day and night to generate germanium dioxide precipitate, washed with cold water until the washing solution does not contain Cl. Germanium dioxide product was obtained by drying at 200 ℃. Its GeCl4 2H2O → GeO2 4HCl |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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