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| | GERMANIUM(IV) ETHOXIDE Basic information |
| Product Name: | GERMANIUM(IV) ETHOXIDE | | Synonyms: | GERMANIUM ETHOXIDE;GERMANIUM ETHYLATE;GERMANIUM(IV) ETHOXIDE;GERMANIUM TETRAETHOXIDE;Germanium(IV)ethoxide, 99.95+%;TETRAETHYOXYGERMANE;Germanium(IV) ethoxide, 99.995% (metals basis);Orthogermanic acid tetraethyl ester | | CAS: | 14165-55-0 | | MF: | C8H20GeO4 | | MW: | 252.88 | | EINECS: | 238-007-8 | | Product Categories: | metal alkoxide | | Mol File: | 14165-55-0.mol |  |
| | GERMANIUM(IV) ETHOXIDE Chemical Properties |
| Melting point | -72°C | | Boiling point | 185-6°C | | density | 1.14 g/mL at 25 °C(lit.) | | refractive index | n20/D 1.407(lit.) | | Fp | 121 °F | | form | Liquid | | Specific Gravity | 1.134 | | color | Colorless | | Water Solubility | Soluble in anhydrous alcohol and benzene. Hydrolyzes in water | | Hydrolytic Sensitivity | 7: reacts slowly with moisture/water | | Sensitive | Moisture Sensitive | | BRN | 3661173 | | InChI | 1S/C8H20GeO4/c1-5-10-9(11-6-2,12-7-3)13-8-4/h5-8H2,1-4H3 | | InChIKey | GXMNGLIMQIPFEB-UHFFFAOYSA-N | | SMILES | CCO[Ge](OCC)(OCC)OCC | | CAS DataBase Reference | 14165-55-0(CAS DataBase Reference) | | EPA Substance Registry System | Ethanol, germanium(4+) salt (14165-55-0) |
| Hazard Codes | T,Xi | | Risk Statements | 10-36/37/38-23/24/25 | | Safety Statements | 26-36-45-36/37/39-27-16 | | RIDADR | UN 1993 3/PG 3 | | WGK Germany | 3 | | F | 10-21 | | TSCA | TSCA listed | | HazardClass | 3 | | PackingGroup | III | | HS Code | 2905190019 | | Storage Class | 3 - Flammable liquids | | Hazard Classifications | Eye Irrit. 2
Flam. Liq. 3
Skin Irrit. 2
STOT SE 3 |
| | GERMANIUM(IV) ETHOXIDE Usage And Synthesis |
| Chemical Properties | Water-clear liquid. B.p. 186°C. Hydrolyzes easily, yielding
GeO2. | | Uses | It is a sol-gel intermediate for optical fibers and photosensitive. | | Preparation | A solution of 9.8 g. of metallic sodium in a considerable excess
of absolute alcohol is prepared. A solution of 20 g. of GeCl4 in absolute ether is added with
stirring and exclusion of moisture. The mixture is refluxed for
several hours and then decanted from the NaCl which separates.
The solid is washed with absolute ether. The washings are combined with the main solution and the solvent is then driven off
in vacuum. Finally, the tetraethoxygermane is distilled. It is
redistilled at atmospheric pressure. | | reaction suitability | core: germanium
reagent type: catalyst | | Purification Methods | Distil it through a 10cm Vigreux column (p 11) under reduced pressure. Alternatively distil it through a Fenske glass helices (p 11) column fitted with a total condensation variable take-off stillhead. Fractionate it under reduced pressure using a reflux ratio of 10:1. [Johnson & Fritz J Am Chem Soc 75 718 1953, Bradley J Chem Soc 4916 1956, Beilstein 1 IV 1308.] |
| | GERMANIUM(IV) ETHOXIDE Preparation Products And Raw materials |
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