China Factory Direct
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| CAS number | 1000-05-1 |
| Product name | 1,1,3,3,5,5,7,7-OCTAMETHYLTETRASILOXANE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty GradeMaterial GradeElectronic GradeCosmetic GradeFood Grade |
| Packaging | 25L/drum |
| 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 | Raw material for silicone oil, silicone rubber, and silicone resins | Used as a chain regulator or end-capper to control molecular weight and end-group structure during polymerization |
| Personal Care | Volatile silicone component in cosmetics | Blended with cyclic siloxanes in formulations such as hair conditioners and skin creams to provide lubricity and spreadability |
| Electronics & Electrical | Diluent and leveling agent for LED encapsulation materials | Reduces viscosity and improves fillability and surface planarity during LED encapsulant preparation |
| Coatings & Inks | Leveling additive for high-performance coatings | Incorporated into polyurethane or acrylic coating systems to enhance film leveling and anti-cratering performance |
| Textile Printing & Dyeing | Intermediate for fabric softening agents | Converted into amino silicone oil via hydrosilylation or aminolysis for softening cotton, polyester, and other fibers |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Purity | Gas Chromatography (GC) | Separation and quantification based on volatility and column interaction; peak area comparison against reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration where iodine reacts stoichiometrically with water in a controlled anhydrous environment. |
| Acid Number | Acid-Base Titration | Neutralization of acidic impurities with standardized KOH solution using phenolphthalein or potentiometric endpoint detection. |
| Refractive Index | Refractometry | Measurement of light bending angle at air-sample interface, correlated to molecular composition and purity. |
| Density | Digital Density Meter | Oscillation frequency measurement of a U-tube filled with sample, converted to density via calibration. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Comparison of sample color intensity against platinum-cobalt standards or absorbance at 455 nm. |
| Residue on Evaporation | Gravimetric Analysis | Evaporation of a known sample mass under controlled conditions followed by weighing of non-volatile residue. |
| Chloride Content | Ion Chromatography (IC) | Separation of chloride ions on an anion-exchange column with conductivity detection. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of metal atoms by absorption of specific wavelength light after atomization in flame or graphite furnace. |
| Volatile Impurities | Headspace Gas Chromatography (HS-GC) | Analysis of low-boiling contaminants partitioned into headspace above heated sample, followed by GC separation. |
| Viscosity | Capillary Viscometry | Measurement of flow time through a calibrated capillary tube under gravity, converted to kinematic viscosity. |
| pH of Aqueous Extract | pH Potentiometry | Measurement of hydrogen ion activity in water extract using calibrated glass electrode and reference electrode. |
| Test Item | Specification |
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| Appearance | Colorless liquid |
| Purity | >=98.5% (GC) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Refractive Index (n20/D) | 1.375–1.385 |
| Relative Density (20°C/25°C) | 0.845–0.855 g/cm³ |
| Odor | Characteristic, mild odor |
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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.