China Factory Direct
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| CAS number | 2554-06-5 |
| Product name | 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeMaterial GradeElectronic 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) |
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 | Production of high-performance polymers such as silicone rubber and silicone resins | Used as a crosslinker or chain extender in polymerization reactions |
| Semiconductor Packaging | Sealing and protective material for electronic components | Thermally cured to form a high-temperature-resistant, electrically insulating encapsulation layer |
| Coatings and Paints | Enhances coating weather resistance, hydrophobicity, and mechanical strength | Co-polymerized with other monomers or blended as an additive |
| Pharmaceuticals and Cosmetics | Synthesis of silicone oil carriers or controlled-release materials | Emulsified or polymerized to produce functional silicon-based compounds |
| Adhesives | Improves adhesive flexibility and heat resistance | Acts as an active component in the curing reaction |
| Detection Item | Common Testing Method | Method Overview |
|---|---|---|
| Purity Analysis | Gas Chromatography (GC) | Utilizes a capillary gas chromatography column with hydrogen or nitrogen as carrier gas and FID detection. The main content of tetramethyltetraethylcyclosiloxane is determined by comparing retention times with standard reference materials and using area normalization for peak integration, thereby assessing purity. |
| Impurity Content (e.g., moisture, oligomers, isomers, etc.) | Gas Chromatography-Mass Spectrometry (GC-MS) | Combines the separation capability of gas chromatography with the qualitative identification power of mass spectrometry to separate, identify, and quantify trace impurities in samples—particularly effective for structurally similar impurities such as other cyclic siloxane isomers. |
| Moisture Content | Karl Fischer Coulometric Titration | Based on the reaction between iodine and sulfur dioxide in the presence of pyridine/imidazole with water, this method generates iodine electrolytically for titration, enabling precise measurement of trace moisture (typically required ≤100 ppm). |
| Density | Density Meter Method (Vibrating Tube Densitometer) | Measures sample oscillation period under constant temperature based on U-tube oscillation principle, then converts it into density value for auxiliary assessment of product consistency and detection of abnormal components. |
| Refractive Index | Abe Refractometer Method | Determines the refractive index of the sample at a specified temperature (e.g., 25°C) for sodium light (589.3 nm), serving as a rapid identification and quality control parameter. |
| Appearance and Color | Visual Colorimetry / Colorimeter Method | Sample is placed in a standard color tube and visually compared with platinum-cobalt standard solutions or APHA color scale to assess clarity and color grade (typically requires colorless and transparent, APHA ≤ 20). |
| Vinyl Group Content | Proton Nuclear Magnetic Resonance (¹H NMR) | Calculates the molar content of vinyl groups by integrating the signal area of vinyl protons (δ ≈ 5.7–6.1 ppm) relative to methyl proton signals (δ ≈ 0.1–0.2 ppm) in the ¹H NMR spectrum, verifying molecular structural integrity. |
| Test Item | Specification |
|---|---|
| Appearance | Colorless to almost colorless clear liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Refractive Index (n20/D) | 1.415–1.425 |
| Relative Density (20°C/25°C) | 0.92–0.94 g/cm³ |
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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.