Technical Indicators

1. Appearance: Colorless to yellow transparent oily liquid, free of mechanical impurities
2. Refractive index: 1.470–1.485
3. Kinematic viscosity (cSt): Customizable as per customer requirements
4. Flash point (℃): ≥ 300
5. Dielectric loss tangent (25℃, 50 Hz): ≤ 1×10⁻³
6. Dielectric constant (25℃, 50 Hz): 2.6–3.0
7. Breakdown strength (KV/2.5 mm, 25℃, 50 Hz): ＞ 45
8. Volume resistivity (Ω·cm, 25℃): ≥ 1×10¹⁴
9. Thermal expansion coefficient: Lower than that of methyl silicone oil

Applications

1. Replacement for methyl silicone oil
   It excels in low-temperature resistance, high-temperature resistance, lubricity and compatibility.

• Low phenyl silicone oil: Ideal for applications requiring high cold resistance.
• Medium/high phenyl silicone oil: High thermal stability and good radiation resistance; used in heat treatment baths, high-temperature heating oils, GC stationary phases, and high/low-temperature lubricants for electrical/electronic equipment.
• High-temperature greases (with carbon black, lithium soap or MoS₂): For high-temperature fan bearings, ball bearings, automotive engines, textile dryers, etc.

2. Hydraulic, instrumentation & electrical insulation
   Widely used in hydraulic systems, instruments and electrical insulation.

• Phenyl vinyl silicone oil & phenyl hydrogen-containing silicone oil: For high-temperature & radiation-resistant addition-cured silicone rubber.
• Hydroxyl-terminated phenyl silicone oil: As fabric finishing agent to improve smoothness, softness, hydrophobicity and oleophobicity.
• Internal additive for plastics: Improves processability due to good compatibility.

3. Cosmetics & LED encapsulation

• Better compatibility with cosmetic ingredients than methyl silicone oil; stable to heat and UV, with unique luster; used in skin care, hair care products.
• Methyl phenyl silicone oil with suitable viscosity and high transparency: Used as LED encapsulation material due to high light transmittance, high refractive index, good thermal stability and radiation resistance.