Phenyl Silicone Oil: Manufacturing and Supply

Phenyl Silicone Oil: Manufacturing and Supply

Phenyl silicone oil (methyl-phenyl polysiloxane) is a core category in our silicone oil product line, comprising three main types: general-purpose methyl-phenyl silicone oil, functionalized phenyl silicone oil, and ultra-high vacuum phenyl diffusion pump oil.

I. Product Categories

1) General-purpose Methyl-phenyl Silicone Oil (Standard/Most Common)

Low Phenyl Content: Low phenyl molar fraction; features outstanding cold resistance (-70°C); suitable for low-temperature damping, instrument oils, and low-temperature heat transfer media; corresponds to the domestic "250 series"; various viscosity grades available.

Medium Phenyl Content: High-temperature resistance and excellent electrical insulation;

suitable for high-temperature lubrication, heat transfer fluids, and electronic insulation oils.

High Phenyl Content: Heat resistance, radiation resistance, and high refractive index;

suitable for high-temperature heat carriers, radiation-exposed environments, and optical media.

Appearance: Colorless to pale yellow transparent liquid; customizable viscosity (25–2000 cSt).

2) Functionally Modified Phenyl Silicone Oil (Reactive)

Methyl-phenyl Vinyl Silicone Oil: Vinyl-terminated or vinyl-containing side groups; used for addition-cure phenyl silicone rubber, phenyl silicone resin diluents, and LED encapsulation silicone resins; adjustable vinyl content.

Hydroxy (Silanol)-terminated Methyl-phenyl Silicone Oil: Reactive hydroxy end groups; used for condensation-cure phenyl silicone rubber, coatings, and fabric hydrophobic finishing agents.

Other Customizations: Phenyl hydrogen silicone oil, phenyl amino silicone oil, etc., synthesized upon request.

3) Ultra-high Vacuum Phenyl Diffusion Pump Silicone Oil (Specialty High-phenyl Silicone Oil)

Tetramethyl-tetraphenyl-trisiloxane

Pentaphenyl-trimethyl-trisiloxane (CAS 3390-61-2)

Features: Extremely low saturated vapor pressure, thermal stability, and minimal back-streaming; used in vacuum coating, semiconductor manufacturing, optical coating, and vacuum metallurgy.