Silicone oil

CAS 63148-62-9[-Si(CH3)2O-]nPolymer Science

Silicone oil (CAS: 63148-62-9), a polymer with the linear formula [-Si(CH3)2O-]n, is a versatile synthetic fluid. It exhibits excellent thermal stability, low surface tension, and good dielectric properties. Its hydrophobic nature and lubricating capabilities make it suitable for a wide range of industrial and research applications, serving as a lubricant, coolant, and damping fluid.

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Silicone oil ([-Si(CH3)2O-]n) — chemical structure, CAS 63148-62-9; Materials Science, fine chemical supplied by Tech Serve Solutions

Materials SciencePolymer SciencePolymersSilicone oilsSilicones

01 /Applications

Lubricant and Release Agent

Silicone oil is widely employed as a non-corrosive lubricant for plastics and rubber, and as a mould release agent in various manufacturing processes due to its excellent thermal stability and low surface tension.

Heat Transfer and Hydraulic Fluid

Its high boiling point and thermal stability allow silicone oil to function effectively as a heat transfer fluid in closed systems and as a damping or hydraulic fluid where consistent performance across a range of temperatures is required.

Cosmetic and Personal Care Formulations

In cosmetic applications, silicone oil acts as an emollient, solvent, and conditioner, providing a smooth feel and improving spreadability in products like lotions and hair care treatments.

Laboratory Reagent

As a laboratory reagent, it serves various functions including use as a diffusion pump fluid, a component in certain analytical techniques, and as a specialised coolant or lubricant in research settings.

02 /Properties

Linear formula	[-Si(CH3)2O-]n
Boiling point	>140 °C/0.002 mmHg(lit.)
Density	0.98 g/mL at 25 °C
Refractive index	n20/D 1.403(lit.)
Vapour pressure	5 mmHg (20 °C)
Vapour density	>1 (vs air)
Viscosity	60,000 cSt(25 °C)

03 /Safety & handling

Protective equipment	Eyeshields, Gloves
Flash point	316 °C / 600.8 °F
Water hazard class (WGK, DE)	1

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

63148-62-9

MDL number

MFCD00132673

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Silicone oil used for?

Silicone oil is used as a lubricant, mould release agent, heat transfer fluid, hydraulic fluid, damping fluid, and in cosmetic formulations.

What is the CAS number and formula for Silicone oil?

The CAS number for Silicone oil is 63148-62-9, and its linear formula is [-Si(CH3)2O-]n.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Silicone oil, identified by CAS 63148-62-9, typically as a technical or research grade. We do not represent this product as USP, BP, or EP grade unless explicitly stated otherwise in the product specifications.

How should Silicone oil be handled safely?

Handle Silicone oil with appropriate personal protective equipment, including eyeshields and gloves, as indicated by its safety data. Ensure adequate ventilation and consult the safety data sheet for detailed handling procedures and hazard information.

How is Silicone oil packed, shipped, and exported?

Silicone oil is carefully packed to ensure integrity during transit. Tech Serve Solutions is experienced in exporting chemicals globally, adhering to all relevant shipping and customs regulations.

How can I request a sample or quote for Silicone oil?

To request a sample or a quote for Silicone oil, please contact our sales department through the website or by phone, providing your specific requirements.