Products Description of Polysiloxanes CAS#63148-53-8
Polysiloxanes (CAS#63148-53-8), also known as silicones or dimethyl siloxanes, are polymeric compounds with distinctive physicochemical properties.
Physical Description:
Polysiloxanes are typically colorless to pale yellow oily liquids with low surface tension. This property enables them to spread easily and wet various surfaces, making them suitable for use as lubricants and coating materials.
Chemical Stability:
They demonstrate excellent chemical stability, capable of withstanding high temperatures and oxidation without decomposition or formation of toxic by-products, making them suitable for demanding and high-temperature environments.
Electrical Insulation:
Polysiloxanes possess excellent electrical insulating properties and are widely used in electronic devices and electrical insulation materials.
Polysiloxanes Chemical Properties
| English Name | Polysiloxanes |
| English Synonyms | POLYSILOXANES;POLYPHENYLMETHYLDIMETHYLSILOXANE;POLYPHENYLMETHYLSILOXANE;POLYMETHYLP HENYLSILOXANE;SILICONE DC 550 FLUID;SILICONE FLUID;SILICONE FLUID DC 550;SILICONE OIL AR 200 |
| CAS Number | 63148-53-8 |
| density | 0.91 |
| refractive index | 1.443 |
| Fp | 204 °C |
| form | Liquid |
| Dielectric constant | 2.2（Ambient） |
| EPA Substance Registry System | Siloxanes and Silicones (63148-53-8) |
Main Applications
Lubricants: Used in machinery components, bearings, automotive brake systems, and other mechanical applications due to their good lubricating performance.
Protective Agents: Form protective films on metal surfaces to prevent corrosion and oxidation, used in anti-rust and waterproofing applications.
Medical Products: Due to their non-toxic and hypoallergenic nature, they are used in medical emulsions and as lubricants for artificial joints.
Manufacturing Process
Polysiloxanes are generally synthesized via alkylation or hydrosilylation reactions. Alkylation involves organic alkyl compounds reacting with inorganic silicon compounds, while hydrosilylation involves organosilicon hydrides reacting with silicon-based compounds.
Safety Precautions
Avoid contact with eyes and prolonged skin exposure. Use appropriate protective equipment such as gloves. Keep away from open flames and high temperatures. Store in a cool, dry place away from direct sunlight. Keep out of reach of children and pets.
Technical Specifications
Appearance: Colorless to pale yellow liquid
Surface Tension: Low
Chemical Stability: High
Electrical Insulation: Excellent
Please refer to the Material Safety Data Sheet (MSDS) before use and follow all recommended safety guidelines.
Company Profile
Located in Shandong, one of China’s key chemical industry hubs, Shandong Rongsheng Chemical Co., Ltd. is an integrated chemical company combining R&D, manufacturing, sales, and international trade. We specialize in basic chemical raw materials and specialty chemical additives for applications in rubber and plastics, coatings and inks, water treatment, and industrial manufacturing.
With our own standardized production facilities, we maintain independent quality control throughout the supply process and provide factory-direct products without unnecessary intermediaries. Flexible services are available for bulk purchasing, customized formulations, packaging, and small-batch samples, supported by responsive production scheduling and reliable delivery.
Our experienced international trade team provides comprehensive export support, from inquiries and sample delivery to customized solutions, export documentation, logistics coordination, and after-sales service. Guided by quality and integrity, we are committed to delivering stable, cost-effective chemical supply solutions and building long-term partnerships with customers worldwide.
