China Factory Direct
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| CAS number | 12758-40-6 |
| Product name | Carboxyethylgermanium sesquioxide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeElectronic GradeMaterial GradeReagent GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Electronics Industry | Semiconductor dopant | Chemical vapor deposition (CVD) |
| Optical Materials | Additive for high-refractive-index glass | Melt-quenching |
| Medical Field | Radiotherapeutic carrier (experimental stage) | Chelation reaction synthesis |
| Chemical Production | Intermediate for organic germanium compound synthesis | Solvothermal synthesis |
| Research | Germanium-based functional materials research | Sol-gel process |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (C8H12GeO5) | Acid-Base Titration | Quantifies carboxylic acid groups via standardized NaOH titration with phenolphthalein endpoint. |
| Heavy Metal Impurities (Pb, Cd, Hg, As) | ICP-OES | Simultaneously measures trace metal concentrations by plasma excitation and optical emission detection. |
| Residue on Ignition | Gravimetric Analysis | Determines inorganic ash content by high-temperature ignition and weight difference measurement. |
| Loss on Drying | Thermogravimetric Analysis | Measures volatile content by mass loss after controlled heating under specified conditions. |
| Chloride Content | Potentiometric Titration | Quantifies chloride ions using silver nitrate titrant and silver indicator electrode. |
| Sulfate Content | Gravimetric Analysis | Precipitates sulfate as BaSO4 and determines concentration from dried precipitate mass. |
| Iron (Fe) Impurity | AAS | Measures iron concentration by atomic absorption of characteristic wavelength light in flame atomizer. |
| Water Content | Karl Fischer Titration | Determines water via stoichiometric reaction between iodine, sulfur dioxide, and water in methanol medium. |
| pH of Aqueous Solution | Potentiometric pH Measurement | Measures hydrogen ion activity using calibrated glass electrode and reference electrode. |
| Organic Volatile Impurities | GC-FID | Separates and quantifies residual solvents by gas chromatography with flame ionization detection. |
| Particle Size Distribution | Laser Diffraction | Analyzes size distribution by measuring angular variation in laser light scattering pattern. |
| Bulk Density | Volumetric Method | Calculates mass per unit volume using standardized cylinder and tapping procedure. |
| Test Item | Specification |
|---|---|
| Appearance | White powder |
| Purity | >=99.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Single Impurity | <=0.3% |
| Residue on Ignition | <=0.2% |
| Heavy Metals | <=10 ppm |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.