Silicones; in primary forms

HS code 391000 covers the classification of silicones in their primary forms. Silicones are a group of synthetic polymers that have a wide range of applications across various industries, including construction, automotive, electronics, and personal care. As a versatile material, silicones play a crucial role in the global economy, providing essential components and solutions for numerous products and processes.

The production of silicones in their primary forms typically involves the polymerization of organosilicon monomers, such as dimethylsiloxane. This process is often carried out using catalysts and controlled temperature and pressure conditions to achieve the desired molecular structure and physical properties. The resulting silicone polymers can then be further processed and formulated into a wide range of silicone-based products.

The main inputs required for the production of silicones in primary forms include silicon-containing raw materials, such as silicon tetrachloride or methylchlorosilanes, as well as various catalysts, solvents, and other additives. Additionally, specialized production equipment, including reactors, distillation columns, and drying systems, are essential for the efficient and controlled manufacturing of silicone polymers.

The primary outputs of HS code 391000 are silicone polymers in their basic forms, such as silicone fluids, gels, resins, and elastomers. These silicone materials are then further processed and incorporated into a wide range of end-use products, including 401700 Vulcanized rubber, 852990 Parts suitable for use solely or principally with the apparatus of headings 85.25 to 85.28, and 330499 (Beauty or make-up preparations and preparations for the care of the skin (other than medicaments), including sunscreen or sun tan preparations; manicure or pedicure preparations), among others.