Product Overview
Silicone Oil 350 CST is a silicone fluid identified by its nominal kinematic viscosity of approximately 350 centistokes (cSt). Commercial products with this description are often based on polydimethylsiloxane (PDMS), but the exact chemistry and specification must be confirmed with the supplier.
Silicone fluids are valued for their lubricating properties, water repellency, thermal stability, and ability to form smooth, low-surface-energy films. Their performance depends on viscosity, formulation compatibility, substrate, and application conditions.
Key Features and Benefits
- Nominal viscosity: 350 cSt, subject to the supplier’s specified test conditions and tolerance.
- Smooth fluid properties: Can provide lubrication and surface conditioning in compatible applications.
- Water repellency: PDMS silicone fluids are generally hydrophobic.
- Surface and release applications: May help reduce friction or sticking in suitable systems.
- Formulation flexibility: Can be evaluated in compatible industrial and specialty formulations.
- Grade-dependent performance: Chemical identity, purity, and suitability should be checked before use.
Applications
Depending on the confirmed grade and application requirements, Silicone Oil 350 CST may be evaluated for:
- Industrial lubrication and maintenance
- Release-agent and mould-release formulations
- Surface conditioning and polishing formulations
- Selected household-care and specialty products
- Rubber, plastic, and other material-processing applications
- Laboratory trials and formulation development
Not every grade is suitable for personal care, food-contact applications, medical devices, or other regulated uses. Confirm the relevant certification and intended-use requirements before selecting the material.
Product Specifications
- Product name: Silicone Oil 350 CST
- Common chemical identity: Often polydimethylsiloxane (PDMS); supplier confirmation required
- Common abbreviation: PDMS, if confirmed by the supplier
- CAS number: 63148-62-9 is commonly associated with dimethyl silicone fluids; verify the exact product identity and applicable CAS number with the supplier.
- Nominal kinematic viscosity: 350 cSt
- Viscosity equivalence: 350 cSt = 350 mm²/s
- Appearance: Commonly clear, colourless liquid
- Odour: Usually odourless or very low odour, depending on grade
- Water compatibility: Generally insoluble in water for conventional PDMS fluids
- Specific gravity, purity and viscosity tolerance: As stated in the supplier’s TDS or COA
- Intended-use grade: Confirm before purchase and application.
These are general identification details, not a batch-specific specification. Verify viscosity test temperature, viscosity tolerance, chemical identity, and other required properties against the supplier’s Technical Data Sheet (TDS) and Certificate of Analysis (COA).
Why Source from MNTENT.com?
MNTENT.com helps customers source selected chemicals and formulation raw materials in smaller quantities for:
- Laboratory testing and evaluation
- Product formulation trials
- Small-batch development
- Material and ingredient comparison
- Research and development
Availability, pack sizes, grade, and dispatch details depend on the current product listing and supplier documentation.
Storage and Handling
- Store in a tightly closed, clearly labelled container.
- Follow the supplier’s recommended storage temperature and handling instructions.
- Avoid contamination with water, dust, or incompatible chemicals.
- Clean spills promptly, as silicone fluid can make floors and surfaces slippery.
- Use appropriate protective equipment and consult the current Safety Data Sheet (SDS).
- Do not assume that an industrial grade is suitable for cosmetic, medical, or food-contact applications.
Frequently Asked Questions
1. What does 350 CST mean?
CST means centistokes, a unit of kinematic viscosity. A nominal viscosity of 350 cSt is equivalent to 350 mm²/s at the specified test temperature.
2. Is Silicone Oil 350 CST the same as PDMS?
Many products sold as Silicone Oil 350 CST are PDMS-based fluids, but the exact chemistry should be confirmed from the supplier’s documentation.
3. Does Silicone Oil 350 CST dissolve in water?
Conventional PDMS silicone fluids are generally insoluble in water and may form a separate layer unless a compatible emulsifier or formulation system is used.
4. What is Silicone Oil 350 CST used for?
Depending on the grade, it may be used for lubrication, surface conditioning, release applications, and selected industrial or specialty formulations.
5. Can Silicone Oil 350 CST be used in cosmetics?
Only if the specific grade meets the relevant cosmetic quality, purity, safety, and regulatory requirements. Do not infer cosmetic suitability from viscosity alone.
6. Can I purchase Silicone Oil 350 CST in small quantities?
Small quantities may be available through MNTENT.com for testing and evaluation, subject to current stock and pack-size availability.
