Germanium(IV) methoxide
Germanium(IV) methoxide (CAS: 992-91-6; Formula: Ge(OCH3)4) is an organogermanium compound with a molecular weight of 196.78 g/mol. This colourless liquid serves as a valuable precursor in materials science and chemical synthesis. Its primary applications include its use as a promoting agent in oxidation reactions and its role in the preparation of sol-gel hybrid coatings for chromatographic applications.
- IUPAC
- Methyl germanate(IV),Tetramethoxygermanium

Promoting Agent in Oxidation Reactions
Germanium(IV) methoxide acts as a promoting agent for vanadyl pyrophosphate-catalyzed oxidation reactions, contributing to enhanced catalytic efficiency in specific chemical transformations.
Sol-Gel Coatings for Chromatography
It is employed in the preparation of sol-gel hybrid organic-inorganic coatings, which are crucial for capillary microextension and gas chromatography (GC) applications, improving separation performance.
Precursor for Nanomaterials
This compound is utilised in the synthesis of advanced materials, such as gold nanoparticle templated germania nanoshells, highlighting its role in nanotechnology and materials innovation.
Synthesis of Organometallic Complexes
Germanium(IV) methoxide is a reagent in the preparation of specific organometallic structures, including metal(IV) β-cyclodextrin bucket wheel complexes.
| Molecular weight | 196.78 |
|---|---|
| Linear formula | Ge(OCH3)4 |
| Form | liquid |
| Boiling point | 66-67 °C/36 mmHg(lit.) |
| Density | 1.325 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.399(lit.) |
| Impurities tested | ≤5% methyl alcohol |
| Melting point | −18 °C (dec.)(lit.) |
| Application | • Used as a promoting agent for vanadyl pyrophosphate-catalyzed oxidation reactions1• Used to prepare sol-gel hybrid organic-inorganic coatings for capillary microextension and gas chromatography (GC)2• For preparation of metal(IV) β-cyclodextrin bucket wheel complex3• Preparation of gold nanoparticle templated germania nanoshells4 |



Hazard statements
- H226Flammable liquid and vapour
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H331Toxic if inhaled
- H335May cause respiratory irritation
- H371May cause damage to organs
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
- P311Call a POISON CENTER or doctor
| Flash point | 41 °C / 105.8 °F |
|---|---|
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 10-23/24/25-36/37/38-68/20/21/22 |
| Safety statements (S) | 26-36/37-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Germanium(IV) methoxide used for?
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Germanium(IV) methoxide is used as a promoting agent for vanadyl pyrophosphate-catalyzed oxidation reactions, in the preparation of sol-gel hybrid coatings for capillary microextension and gas chromatography, and for the synthesis of various germanium-containing complexes and nanomaterials.
What is the CAS number and formula for Germanium(IV) methoxide?
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The CAS number for Germanium(IV) methoxide is 992-91-6, and its chemical formula is Ge(OCH3)4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Germanium(IV) methoxide with a purity of ≤5% methyl alcohol. This product is supplied as a technical/research grade and is not represented as USP, BP, EP, or other pharmacopoeia grades.
What are the primary safety hazards associated with Germanium(IV) methoxide?
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Germanium(IV) methoxide is a flammable liquid and vapour (H226). It is toxic if swallowed (H301), in contact with skin (H311), and if inhaled (H331). It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335) and damage to organs (H371).
How is Germanium(IV) methoxide packed, shipped, and exported?
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Germanium(IV) methoxide is classified as UN 1993, C3/PGIII for transport. Tech Serve Solutions ensures compliant packing and shipping for domestic and international export, adhering to all relevant regulations for hazardous materials.
How can I request a sample or a quote for Germanium(IV) methoxide?
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To request a sample or a quote for Germanium(IV) methoxide, please contact our sales team through the website or by phone. Provide the product name, CAS number, and your required quantity for prompt assistance.
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