China Factory Direct
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| CAS number | 144-79-6 |
| Product name | 144-79-6 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/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 |
|---|---|---|
| Organosilicon Materials | Synthesis of organosilicon intermediates | Acts as a monomer in hydrolysis-condensation reactions to produce siloxane polymers |
| Pharmaceutical Chemicals | Drug synthesis intermediate | Introduces a diphenylmethylsilyl protecting group, providing selective protection during specific synthetic steps |
| Agricultural Chemicals | Pesticide intermediate | Participates in the synthesis of silicon-containing active ingredients or adjuvants |
| Coatings and Surface Treatment | Raw material for hydrophobic/anti-fouling coatings | Hydrolyzes to form phenyl-substituted silanols, which further crosslink to yield weather-resistant coatings |
| Polymer Materials | Modifier | Modifies polysiloxanes to enhance thermal stability and refractive index |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) | Separation and quantification based on volatility and retention time relative to a certified reference standard. |
| Acid Value | Acid-Base Titration | Neutralization of acidic impurities with standardized NaOH solution using phenolphthalein indicator. |
| Moisture Content | Karl Fischer Titration | Electrochemical determination of water via iodine-sulfur dioxide reaction in anhydrous methanol medium. |
| Chloride Content | Potentiometric Titration with AgNO3 | Precipitation titration where chloride ions react with silver nitrate, detected by silver ion-selective electrode. |
| Residue on Ignition | Gravimetric Analysis | Weighing of non-volatile residue after controlled high-temperature ashing of sample. |
| Color | Visual Comparison or Spectrophotometry (APHA/Pt-Co Scale) | Comparison of sample color against platinum-cobalt standard solutions or measurement of absorbance at 455 nm. |
| Density | Digital Density Meter | Measurement of mass per unit volume at specified temperature using oscillating U-tube principle. |
| Refractive Index | Refractometry | Determination of light bending angle at air-sample interface using calibrated refractometer at 20 degC. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of metal impurities after acid digestion by measuring absorption of element-specific wavelength light. |
| Non-Volatile Residue | Gravimetric Analysis | Weighing of residue after evaporation of a known sample mass under controlled heating and vacuum. |
| Distillation Range | Vacuum Distillation | Measurement of initial and final boiling points under defined reduced pressure using standardized distillation apparatus. |
| Organic Impurities (e.g., DPHS, MDPHS isomers) | Gas Chromatography-Mass Spectrometry (GC-MS) | Separation by GC followed by identification and semi-quantification via mass spectral fragmentation patterns. |
| Test Item | Specification |
|---|---|
| Appearance | Colorless to light yellow clear liquid |
| Purity | >=98.0% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.565–1.575 |
| Relative Density (20°C/25°C) | 1.12–1.14 g/cm³ |
| Odor | Characteristic pungent odor |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.