Appearance: colorless to light yellow transparent liquid viscosity (25℃) mm2/s: 100-200 refractive index n25:1.480-1.495 density (25℃) g/ml: 1.02-1.08 flash point (opening) ℃ ≥300 freezing point ℃ ≤-40 heat loss (250℃·2h)% ≤ 1.0 Technical features: It has excellent It has the characteristics of electrical insulation, ozone resistance, corona resistance, hydrophobicity, small viscosity coefficient, low surface tension, large shear resistance, large compression, etc. Due to the introduction of phenyl in the molecular chain, it has better high temperature resistance, performance, lubricity and solubility than methyl silicone oil, and the operating temperature is -50℃~250℃. Uses: Used as insulation, lubrication, damping, shockproof, moisture-proof, dustproof and high-temperature hydraulic oil and high-temperature heat carrier, mainly used as impregnating oil for power capacitors. It has a wide operating temperature range, good reliability, good gas digestibility and excellent dielectric properties. It can also be used as transformer filling oil and pressure signal transmission medium for various pressure transmitters.