In the next stage, the paraffins contained in the kerosene are converted into normal paraffins (linear paraffins). This process can be achieved using methods such as adsorption and molecular sieving.

In the following step, the normal paraffins undergo dehydrogenation to form linear olefins. This process is carried out in a reactor using dehydrogenation catalysts such as chromium or platinum, which specifically act on the carbon atoms of the linear chain.

The next and most important stage in LAB production is called alkylation. This is an electrophilic addition reaction in which the linear alkyl group is attached to the benzene ring. Common catalysts used in this process include hydrofluoric acid or aluminum chloride.

After alkylation, the resulting product contains excess benzene, unreacted paraffins, and various impurities, which must be separated from LAB by fractional distillation.

The Global Linear Alkyl Benzene Industry

In 2024, global LAB production was reported at about 4.55 million tons, and it is expected to reach 6.22 million tons by 2033. According to available data, Asia is both the largest producer and the largest consumer of linear alkyl benzene in the world, accounting for 47.8% of the global market.

Spanish company Cepsa, with a capacity of 500,000 tons per year, and Indian company Reliance Industries Limited, with a production capacity of 180,000 tons per year, are among the world’s largest LAB producers.

Due to increased consumption of detergents in Asia and Africa, production of this product is also expected to rise.

In the Middle East, the largest LAB producer is Farabi Petrochemicals Company in Saudi Arabia, with an annual capacity of 330,000 tons.

Linear Alkyl Benzene Industry in Iran

Bistoon Petrochemical Company and The Iranian Chemical Industries Investment Company are the only LAB producers in Iran.

The Iranian Chemical Industries Investment Company controls nearly 70% of the market for this product.

According to available statistics on the Iran Mercantile Exchange in 1403 (2024/2025), Bistoon Petrochemical Company sold approximately 59,500 tons, and The Iranian Chemical Industries Investment Company sold about 87,975 tons of LAB on the domestic market floor.

Both companies offer LAB through the domestic market ring of the Iran Mercantile Exchange, selling their products through the exchange’s trading mechanism.

LAB is traded in the physical market and the open auction hall of the Iran Mercantile Exchange.

Summary

The most important applications of LAB are in shampoos, laundry powders and liquids, dishwashing liquids, and industrial as well as household detergents. Around 75% to 85% of global LAB consumption is dedicated to the production of household and industrial detergents (LAS), while the remainder is used in the chemical, textile, lubricant, and paper industries. Given the increasing global use of linear alkyl benzene, the market for this product is expected to continue its growth.