In the most commonly used silicone oil, all organic groups are methyl groups, which is called methyl silicone oil. Other organic groups can also be used as part of the methyl group to enhance certain properties and apply them to a variety of different purposes.
Other common groups are hydrogen, ethyl, phenyl, chlorophenyl, trifluoromethyl, etc. In recent years, organically modified silicone oils have been rapidly developed, showing many organically modified silicone oils with special properties.