Poly(dimethylsiloxane) Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 9016-00-6 |
| Product name | Poly(dimethylsiloxane) |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeElectronic GradeCosmetic GradeFood 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 Poly(dimethylsiloxane)
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Poly(dimethylsiloxane) Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Poly(dimethylsiloxane)
| Industry | Application | Process |
|---|---|---|
| Cosmetics | Emollient, skin-conditioning agent | Added to skincare products such as creams, lotions, and hand creams to impart smooth texture and moisturizing effect |
| Cosmetics | Defoaming agent | Reduces foam stability in facial cleansers and shaving gels to improve user experience |
| Pharmaceuticals | Defoaming agent | Used in oral medications for gastrointestinal flatulence to eliminate gas bubbles in the GI tract |
| Pharmaceuticals | Pharmaceutical excipient | Serves as a carrier or stabilizer in sustained-release formulations to enhance drug stability |
| Personal Care | Conditioner ingredient | Added to shampoos and conditioners to improve hair shine and combability |
| Industrial Manufacturing | Lubricant | Applied as a mold-release agent for plastics and rubber products and for lubrication of mechanical components |
| Industrial Manufacturing | Defoaming agent | Inhibits foam formation during the production of coatings, inks, and cleaning agents |
| Textiles | Softening agent | Applied in fabric finishing processes to enhance hand feel and softness |
| Electronics | Encapsulation material | Used to encapsulate and protect semiconductors and electronic components, providing electrical insulation and moisture resistance |
| Construction | Waterproofing agent | Added to sealants and waterproof coatings to improve hydrophobicity and weather resistance |
Manufacturing Quality Control of Poly(dimethylsiloxane)
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color, transparency, and presence of impurities or foreign matter with the naked eye to determine compliance with specified requirements. |
| Viscosity | Rotational Viscometer Method / Capillary Viscometer Method | Measure the kinematic or dynamic viscosity of PDMS fluid at a specified temperature to reflect its molecular weight and flow characteristics. |
| Refractive Index | Abbe Refractometer Method | Determine the refractive index of PDMS at a specific temperature to assist in assessing purity and compositional consistency. |
| Volatile Content (Volatile Matter) | Thermogravimetric Analysis (TGA) / Oven Drying Loss Method | Heat the sample at a specified temperature (e.g., 150°C) for a defined duration and measure the percentage of mass loss to evaluate low-molecular-weight volatile content. |
| Hydroxyl Content | Titration Method (e.g., Acetylation Method) | Acetylate the terminal hydroxyl groups via chemical reaction, then titrate the generated acid with a base to calculate hydroxyl content, reflecting the polymer's end-group structure. |
| Molecular Weight and Molecular Weight Distribution | Gel Permeation Chromatography (GPC) | Use GPC to determine number-average molecular weight (Mn), weight-average molecular weight (Mw), and polydispersity index (PDI) to assess polymer uniformity. |
| Infrared Functional Groups | Fourier Transform Infrared Spectroscopy (FT-IR) | Identify the main chain structure and impurities by analyzing characteristic infrared absorption peaks (e.g., Si–CH₃ at 1260 cm⁻¹, Si–O–Si at 1000–1100 cm⁻¹). |
| Heavy Metal Content | Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or Atomic Absorption Spectroscopy (AAS) | After sample digestion, measure residual levels of heavy metals such as lead, arsenic, mercury, and cadmium to ensure compliance with safety standards (e.g., for cosmetics or medical devices). |
| pH Value (Aqueous Extract) | pH Meter Method | Mix PDMS with water, shake vigorously, allow to separate into layers, then measure the pH of the aqueous phase to assess residual acidic or alkaline impurities. |
| Non-Volatile Content | Residue on Evaporation Method | Evaporate solvents (if present) from a weighed sample under specified conditions and weigh the residual residue to calculate the percentage of non-volatile matter. |
| Cyclomethicone Content (D3–D6, etc.) | Gas Chromatography-Mass Spectrometry (GC-MS) | Separate and quantify cyclic oligomers (e.g., D4, D5), particularly critical to control in cosmetic and food-grade PDMS applications. |
Technical Specifications of Poly(dimethylsiloxane)
| Test Item | Specification |
|---|---|
| Appearance | Clear, colorless liquid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Refractive Index (n20/D) | 1.400 - 1.410 |
| Relative Density (20°C/25°C) | 0.960 - 0.975 g/cm³ |
| Total Impurities | <=1.5% |
| Odor | Characteristic mild odor |
| Solubility | Insoluble in water; miscible with most organic solvents |
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 Poly(dimethylsiloxane)
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of Poly(dimethylsiloxane)
Industrial Poly(dimethylsiloxane) 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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