18169-57-8 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 18169-57-8 |
| Product name | 18169-57-8 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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) |
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Documents We Provide for 18169-57-8
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 18169-57-8 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 18169-57-8
| Industry | Application | Process |
|---|---|---|
| Organic Synthesis | Used as a hydroxyl protecting reagent for selective protection of primary alcohols, secondary alcohols, and phenolic hydroxyl groups | Reacted with alcohols in an inert solvent (e.g., dichloromethane) at room temperature to form silyl ether derivatives; deprotection is achieved under acidic or fluoride conditions |
| Pharmaceutical Intermediates | Applied in functional group modification during synthesis of antitumor agents (e.g., paclitaxel derivatives) and antibiotics | Temporarily protects sensitive hydroxyl groups prior to coupling reactions to suppress side reactions and improve yield and purity of the target product |
| Materials Science | Used in the preparation of organic-inorganic hybrid materials and silicon-based functional coatings | Serves as a precursor in sol-gel processes, undergoing co-hydrolysis and condensation with silicon sources to form stable Si–O–Si networks |
| Agrochemical R&D | Applied in structural modification and activity optimization of silicon-containing agrochemical molecules | Performs silylation of hydroxyl groups on agrochemical scaffolds under specific catalysis to enhance lipophilicity and targeted delivery performance |
Manufacturing Quality Control of 18169-57-8
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detector | Quantifies main component by retention time and peak area comparison against certified reference standard. |
| Acidic Impurities (HCl) | Acid-Base Titration with NaOH | Neutralizes acidic impurities using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemically determines water via iodine generation proportional to water content in sample. |
| Residue on Evaporation | Gravimetric Analysis | Measures non-volatile residue after controlled evaporation under inert atmosphere and drying to constant weight. |
| Chloride Ion (as Cl-) | Potentiometric Titration with AgNO3 | Detects chloride endpoint via silver electrode potential change during silver nitrate titration. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace metals after acid digestion by measuring element-specific atomic emission intensities. |
| Iron (Fe) Content | AAS (Flame Atomic Absorption Spectroscopy) | Measures iron concentration by absorption of light at characteristic wavelength after nebulization and atomization. |
| Color | Visual Comparison Against APHA Scale | Evaluates yellowness/brownness by matching sample color in Nessler tube to standardized platinum-cobalt solutions. |
| Density at 20 C | Oscillating U-tube Densitometry | Determines density from resonant frequency shift of a vibrating U-shaped glass tube filled with sample. |
| Refractive Index at 20 C | Refractometry | Measures bending of light passing through sample at specified temperature to calculate refractive index. |
| Volatile Impurities (e.g., chloroform, dichloromethane) | Headspace GC-FID | Analyzes low-boiling contaminants by gas-phase equilibrium sampling followed by chromatographic separation and detection. |
| Alkyl Siloxane Byproducts | GC-MS | Identifies and quantifies siloxane dimers/oligomers based on mass spectral fragmentation patterns and retention times. |
Technical Specifications of 18169-57-8
| Test Item | Specification |
|---|---|
| Appearance | Colorless to almost colorless clear liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Refractive Index (n20/D) | 1.445–1.455 |
| Relative Density (20°C/25°C) | 1.170–1.190 g/cm³ |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 18169-57-8
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 18169-57-8
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Industrial 18169-57-8 Procurement FAQ
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.
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