Silicone oils are generally colorless (or light yellow), odorless, non-toxic, non-volatile liquids. Silicone oil is insoluble in water, methanol, glycol and - ethoxyethanol. It is miscible with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene. It is slightly soluble in acetone, dioxane, ethanol and alcohol. . It has a small vapor pressure, a high flash point and a flash point, and a low freezing point. As the number of segments n varies, the molecular weight increases and the viscosity increases. Thus, the silicone oil can have various viscosities ranging from 0.65 centistokes to millions of centistokes. If low-viscosity silicone oil is to be produced, acid clay can be used as a catalyst, and telomerization can be carried out at a temperature of 180 ° C, or sulfuric acid can be used as a catalyst, and telomerization can be carried out at a low temperature to produce a high-viscosity silicone oil or a viscous substance which can be made alkaline. catalyst.