Aromatics are types of hydrocarbons derived from petroleum, characterized by one or more six-carbon rings (benzene rings) molecular structure and ‘sweet’ or aromatic odor.
Benzene, toluene, and xylenes are the most common aromatics, and are extensively used in the chemical industry as chemical feed stocks, solvents, and as additives to gasoline to raise its octane rating.
Benzene (cyclohexa-1, 3) is the basis of a group of hydrocarbons referred to as “aromatics”. It is a clear colorless liquid, with a characteristic aromatic smell. Benzene is produced worldwide in substantial quantities, and because it is very easy to transport by ship, it is traded internationally.
Benzene is a very important basic chemical. It is the starting point for many derivatives required in the production of a wide range of goods used in everyday life. For example, benzene and ethylene are used to produce styrene, from which polystyrene is made. It also used to produce cyclohexane, a precursor to caprolactam, which is used to produce nylon. Well-known commodity chemicals like polystyrene and nylon are subsequently used to manufacture everyday items including clothing, paints, computer casings and packaging.
Para-Xylene is made by separating compound xylene, and is a transparent liquid with no color. It is harmful to the body. The product has high value as it is used to produce terephthalic acid, which becomes raw material for polyester, fiber, PET bottles, and films.
Para-Xylene is primarily used as a basic raw material in the manufacture of terephthalic acid (TPA), purified terephthalic acid (PTA) and dimethyl-terephthalate (DMT). TPA, PTA and DMT are used to manufacture polyethylene terephthalate (PET) saturated polyester polymers.