light and heavy naphtha and kerosene (liquid feed), natural gas and liquefied petroleum gas (LPG), NGL, and better to say methane, ethane, butane, propane, pentane, as well as nitrogen from the air (nitrogen), sulfur and phosphate soil, among the main Feeds are considered for petrochemical complexes.
Most petrochemical products are derived from hydrocarbons such as propane, ethane, butane or other components separated from crude oil and natural gas liquids.
Like crude oil and natural gas, petrochemical products are primarily composed of carbon and hydrogen and are called hydrocarbons. If in the product molecule, carbon atoms are connected by single bonds, these molecules are said to be saturated. Now, if they are connected by one or more double bonds, these molecules are said to be unsaturated. Unsaturated chemicals are preferred as petrochemical feedstocks because they are chemically reactive and can easily be converted into other petrochemicals.