Specialty chemicals cover a wide range of products, and the most common types of specialty chemicals can vary depending on the specific industry or application. However, some of the most common types of specialty chemicals include: Surfactants: These are chemicals that are used to reduce the surface tension between two substances, such as water and oil. They are commonly used in cleaning products, personal care items, and in the petroleum industry. Polymers: These are large molecules made up of repeating subunits. They are used in a wide range of products, including plastics, adhesives, coatings, and textiles. Overall, the specialty chemical industry is diverse and constantly evolving, with new products and applications being developed all the time.