Silicone oil:
Melting point: -50 C
Boiling point: 101 C (lit.)
Refractive index: 1.403-1.406
Flash point: 300 degrees centigrade
Density: 0.963
Water solubility: PRACTICALLY INSOLUBLE
Expansion coefficient (25-100 C):9.45*10-4 silicone oil
Silicone oil is generally colorless (or light yellow), tasteless, non-toxic, volatile liquids. Silicon oil is insoluble in water, methanol, glycol and ethoxyl alcohol. It can be dissolved with benzene, two methyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene, slightly soluble in acetone, two oxane, ethanol and butanol. It has very small vapor pressure, high flash point and ignition point, and low freezing point. As the number of segments n is different, the molecular weight increases and the viscosity increases. The silicone oil can have different viscosities, from 0.65 CPM to millions of CPM. If a low viscosity silicon oil is made, acid clay can be used as a catalyst, and at 180 C, or with sulfuric acid as a catalyst, it can be adjusted at low temperature, and the production of high viscosity silicone oil or sticky material can be used as an alkaline catalyst.
Silicone oil has excellent heat resistance, electrical insulation, weatherability, hydrophobicity, physiological inertia and small surface tension. In addition, it has low viscosity temperature coefficient, high compression resistance, and some varieties also have radiation resistance.
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