In modern chemical and fine chemical industries, polydimethylsiloxane (PDMS) is regarded as a "versatile material" due to its unique molecular structure. In personal care products and industrial coatings, where superior skin feel and efficient moisturization are required, low-viscosity 5cst methyl silicone oil has become an indispensable core component because of its near water-like fluidity and excellent spreading performance.
1. Core Chemical Properties: Combination of Purity and Stability
PDMS-5cst is a clear, colorless, tasteless, and odorless liquid. Due to its extremely low viscosity, it exhibits excellent penetration and dispersion properties.
As a key product of Jiujiang Deep Sea Technology, it retains the excellent chemical stability of the methyl silicone family while achieving precise control of physical parameters such as appearance and purity. It is a clear and transparent liquid that does not interfere with the performance of fragrances or pigments in end products.
Low surface tension: It has extremely low surface tension, allowing it to easily wet surfaces and provide excellent water repellency and leveling properties.
Safety flash point: Its closed-cup flash point is 134°C, demonstrating good thermal stability and operational safety among low-viscosity silicone oils.
Viscosity–temperature characteristics: Its viscosity–temperature coefficient is only 0.55, meaning its physical properties change very little over a wide temperature range from -40°C to 200°C, maintaining a relatively stable viscosity profile.
2. Personal Care Applications: The "Secret Weapon" for a Lightweight Skin Feel
For skincare and cosmetic formulators, solving issues such as greasiness and poor spreadability is key to improving user experience.
PDMS-5cst is mainly used as a base oil in personal care formulations. Its key advantages include:
Excellent spreadability: Due to weak intermolecular forces, it quickly forms a thin and uniform film on the skin surface, making products easy to apply.
Fresh and non-greasy feel: It provides a smooth, non-greasy touch with no residue after use, significantly improving the heavy feel often associated with lotions and creams.
Ideal carrier: As a non-volatile carrier, it is compatible with a wide range of solvents, including most anhydrous alcohols and many cosmetic solvents, making it suitable for antiperspirants, deodorants, and nail polish formulations.
3. Industrial Applications: Efficient Wetting and Insulation Protection
In addition to personal care applications, the compressibility and shear stability of PDMS-5cst also make it valuable in industrial fields:
Coatings and surface enhancers: Its excellent leveling properties significantly improve the surface gloss of glass bottles, lens coatings, and household polish products.
Mechanical and electronic applications: As a mechanical fluid and electrical insulating fluid, it offers strong dielectric properties and stable performance under extreme temperature conditions.
Release and moisture protection: Its high hydrophobicity allows it to be used as a release agent for precision molds or as a moisture-resistant coating for electronic components.
4. Usage Instructions and Operational Safety
To ensure optimal performance and safe handling of PDMS-5cst, the following guidelines are recommended:
Storage conditions: Store in a sealed container in a cool, dry, and well-ventilated place at or below 25°C. Keep away from fire and heat sources.
Compatibility recommendations: This product can be used alone or blended with other cosmetic oils as part of the oil phase.
Safety precautions: Silicone oil may cause temporary eye irritation; appropriate protective measures should be taken during handling. At elevated temperatures, contact with strong acids, strong alkalis, and oxidizing agents should be avoided to prevent abnormal viscosity changes or the formation of volatile by-products.
