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Silico® Phenyl Silicone Fluids

Compared to dimethyl silicone fluids of the same viscosity, methyl phenyl silicone fluids have a higher viscosity-temperature coefficient, lower freezing point, and higher flash point.

Phenyl silicone fluids are commonly used for high-temperature applications. Replacing the methyl group with a phenyl group in polysiloxane enhances oxidation resistance, thermal stability, and shear resistance. The phenyl group is typically introduced via phenylmethylsiloxane or diphenylsiloxane.

Silico® offers phenyl methyl silicone fluids with high phenyl content, ideal for heat exchange fluids, dielectric coolants, silicone diffusion pump oil, and chromatographic stationary phases. The higher the phenyl content, the better the thermal stability and refractive index.

Silico® also provides low-viscosity phenyl silicone fluids like Silico® PF8704 diffusion pump fluid (CAS No. 3982-82-9) and Silico® PF8705 diffusion pump fluid (CAS No. 3390-61-2) for high and ultra-high vacuum applications.

Silico® PC19816 (Phenyl Trimethicone) is widely used in cosmetics as an anti-foaming agent, hair conditioning agent, and skin-conditioning agent to enhance product performance.

Recommended Phenyl Silicone Fluids

Silico® PC19816 Phenyl Methicone

Silico® PC19816 (CAS 70131-69-0) is a phenyl-modified polymethylphenylsiloxane, co-soluble with ethanol and mineral oils. It improves cosmetic formulations and acts as a waterproof additive, reducing viscosity. INCI: Phenyl methicone.

Silico® PC19826 Phenyl Trimethicone

Silico® PC19826 is a phenyl-modified polymethylphenylsiloxane, soluble in ethanol and mineral oils. It improves cosmetic formulations and acts as a waterproof additive, reducing viscosity. INCI: Phenyl Trimethicone.

Silico® PF8250 Phenyl Methyl Silicone Fluid

Silico® PF8250(CAS 63148-52-7) is a polyphenylmethyldimethylsiloxane with low viscosity, heat resistance, and high flash point. It offers excellent electrical performance and is similar to Dow DC-510, Shin-Etsu KF-50.

Silico® PF8255 Phenyl Methyl Silicone Fluid

Silico® PF8255 is a phenylmethylpolydimethylsiloxane, similar to Dow DC-550 and Shin-Etsu KF-54. It can be used for skin protection, softening, and high temperature applications such as heat transfer oil and insulating oil.

Silico® PF8260 Methylphenyl Silicone Oil

Silico®-PF8260 (CAS 63148-58-3) is a high-performance silicone fluid with excellent thermal stability and oxidation resistance, ideal for electronics, coatings, and lubricants.

Silico® PF8704 Silicone Diffusion Pump Fluid

Silico® PF8704 is a silicone diffusion pump fluid, similar to Dow DC-704 and Shin-Etsu HIVACF-4. It offers low vapor pressure and thermal stability, ideal for vacuum coating and metallurgical applications.

Silico® PF8705 Silicone Diffusion Pump Fluid

Silico® PF8705 is a silicone diffusion pump fluid for ultrahigh vacuum applications, similar to Dow DC-705 and Shin-Etsu HIVACF-5. It has the highest phenyl content and superior radiation resistance.

Silico® PF8710 Polyphenymethysiloxane

Silico® PF8710 (CAS 68037-54-7) is a clear polyphenylmethylsiloxane fluid with 500 cSt viscosity, offering high oxidation resistance, thermal stability, and dielectric strength.

Silico® PF9181 Methyl Phenyl Cyclosiloxane

Silico® PF9181 (CAS 68037-54-7) is a phenyl methyl cyclic mixture used in phenyl silicone elastomers, offering enhanced performance in high-temperature applications.

Silico® DP801 Polydiphenylsiloxane

Silico® DP801 (CAS 68083-14-7) is a high-purity Polydiphenylsiloxane fluid offering thermal stability and oxidation resistance, ideal for high-temperature lubrication and insulation.

Silico® PM901 Phenyl-Modified Silicone Fluid

Silico® PM901 (CAS 9005-12-3) is a phenyl-modified silicone fluid offering great thermal stability, low-temperature flexibility, and durability. Ideal for coatings, sealants, and electronics.

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Phenyl Silicone Fluids: Guide

Phenyl silicone fluids are specialized silicone oils where methyl groups are partially or fully replaced by phenyl groups. This modification enhances their thermal stability, oxidation resistance, and dielectric properties. They maintain low viscosity across a wide temperature range, making them suitable for extreme conditions. Common applications include heat transfer fluids, dielectric coolants, diffusion pump oils, and lubricants for sensitive equipment. These fluids also find use in cosmetics, providing water repellency and enhancing product performance.