Diffusion pump silicone oilPerformance and use:Diffusion pump oil is a colorless transparent liquid of polymethylphenyl siloxane with high phenyl content. This product has the advantages of low saturated vapor pressure, high temperature resistance, low temperature resistance, oxidation resistance, radiation resistance, stable chemical performance, high vacuum degree, is the most ideal liquid medium material in high vacuum system. It is mainly used for high vacuum diffusion pump oil in electronic, gold and instrument industries, and can also be used as high temperature heat carrier and transfer fluid in instruments.Technical indicators:Appearance: colorless or yellowish transparent liquidColor: ≤40 degreesKinematic viscosity :(25℃) 165-185csRefractive index (nD25) : 1.5765-1.5785Flash point :(open-cup method) ≥243℃Freezing point: - 14 ℃ or less