Silicone Oil 350 cPs (Polydimethylsiloxane PDMS) Lubricant / Oil Bath / Release Agent

SILICONE OIL 350 

Dimethicone 350

Cosmetic / Technical Grade

A high quality of silicone oil which is a clear liquid. Its viscosity shows very little change with temperature variation. It exhibits minimum of change among all types of silicone fluids. Outstanding resistance to high and low temperature extremes, maintenance of flexibility over a wide temperature range are its unique properties.

It shows high resistance to breakdown by mechanical shearing. The low change in viscosity with temperature and excellent heat and cold resistance makes it an ideal lubricant. It is, therefore, widely used in gear wheels, bearings and brushes. It exhibits excellent dielectric properties, which are maintained for prolonged periods of time even under varying operating conditions.

Suitable for Cosmetic, Laboratory and industrial applications.

Performance properties:

• High and low-temperature stability
• Low pour point
• Low temperature and pressure dependence of viscosity
• Good dielectric characteristics
• Low interfacial energy
• High surface activity
• High compressibility
• Chemical inertness

Uses for Silicone 350:

• Cosmetic products
• Heat transfer media
• Thermal transfer fluids
• Hydraulic fluids
• Dielectrics fluids
• Water repellents
• Polishes
• Lubricants for eg treadmills
• Antifoams
• Mould release agents
• Oil Baths

Common Uses of Silicone 350 (350 cSt PDMS)

1. Lubricant and Release Agent

• Plastic, rubber, and metal mold release

• Food-grade lubricants (if FDA-compliant)

• Lubrication for rubber gaskets, seals, and O-rings

2. Polishes and Surface Protectants

• Used in automotive polishes, furniture sprays, and vinyl protectants

• Adds gloss and water repellency to surfaces like plastics, dashboards, and metals

3. Antifoam & Defoamer Base

• May be used as-is or modified into antifoam emulsions

• Effective in industrial cleaning, wastewater, and fermentation systems

4. Cosmetic & Personal Care

• Used as a non-greasy emollient in:

  • Hair serums

  • Skin creams

  • Shaving products

• Gives a smooth, silky feel and enhances spreadability

Silicone 350 is to be used as a surface agent or for de-soaping creams and lotions. However, 1–10% is needed for applications such as hand creams and lotions to form a more uniform film and effective barrier.

5. Dielectric & Thermal Stability

• Used in electronic lubricants, insulating fluids, and coolants

• Excellent dielectric properties and temperature resistance

6. Textile & Leather Applications

• Acts as a softener or hydrophobising agent

• Used in coating or finishing treatments

Properties of silicone oil:

• Synonyms: alpha-Methyl-omega-methoxypolydi­methylsiloxane, PDMS
• Formula: (-Si(CH3)2O-)n
• CAS No: 63148-62-9
• Viscosity: 350 mm2/s
• Melting Point: -55 ^oC
• Autoignition Point: >400 ^oC
• Flash Point: 315 ^oC
• Dielectric strength: 16 kV/mm
• Density: 0.98 g/cm³ at 20^oC
• Solubility: insoluble in water

Silicone 350 is insoluble in water, methanol, ethanol, dilute acids and caustics, vegetable and mineral oils, glycol and glycerin. It is soluble in hexane, aromatic hydrocarbons, chlorohydrocarbons, ethers, esters, ketones and higher alcohols.

Health & Safety:

This product is not classified according to the EU regulations.

Click here for MSDS

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PLEASE NOTE: This product is not for human or animal consumption.