Linear alkyl benzene (abbreviated LAB) is a family of organic compounds represented by the chemical formula C 6 H 5 C n H 2n + 1 , which is used to make sulfonic acid. Usually n is a number between 10 and 16.
Of course, linear alkyl benzene is prepared in heavier cuts such as C 12 -C 13 , C 12 -C 15 and C 10 -C 13 for use in detergents such as dishwashing liquid, car wash shampoo, car detergents and sanitary detergents.
C n H 2n + 1 is usually a branched chain that is mainly used as an intermediate for the production of surfactants. Are known.
Production method of linear alkyl benzene (sulfonic acid)
Hydration kerosene is a common raw material for high purity linear paraffins (N paraffins) which are subsequently converted to linear olefins by dehydrogenation.
C n H 2n + 2 → C n H 2n + H 2
Ethylene, on the other hand, can be oligomerized (partially polymerized) to produce linear alkenes. The resulting linear monofilaments react with benzene in the presence of a catalyst to produce the linear alkyl benzene LAB.
Hydrogen fluoride (HF) and aluminum chloride (AlCl3) are the two main catalysts for the alkylation of benzene with linear monoolefins. The production process using hydrogen fluoride is more economical and is more commonly used.
However, the risk of releasing hydrogen fluoride as a toxic substance to the environment has become a concern, especially after the Clean Air Act was amended. In 1995, a solid catalyst system (DETAL process) became available. This method eliminates the process of catalyst neutralization and HF desorption. As a result, most linear alkyl benzene plants built since then use this process.
Applications of linear alkyl benzene
Linear alkyl benzene is sulfonated to produce linear alkyl benzene sulfonate (sulfonic acid), a degradable surfactant.
LAS are replaced by branched benzene dodecyl sulfonate due to their slow decomposition rate. Linear alkyl benzene is known as an important material due to the good optical clarity measured by a SNO neutrino detector.
High light performance, low amount of radioactive impurities, and high flash point (140 ° C) make this material in good working safety. Linear alkyl benzene is also available in very high quantities as well as at a reasonable price.
Biological considerations
Linear alkyl benzene is concerned about its impact on the environment and human health. Council of Europe (EC) Regulation 1488/94 [10] led to the extensive evaluation of linear alkyl benzene.
Summary
Linear alkyl benzene is used as an intermediate in the production of surfactants, especially linear alkyl benzene or sulfonic acid. These surfactants ultimately in the production of many industrial and household cleaning products such as dishwashing liquid , liquid , shampoo washes , fat slug , Mvtvrshv are , stain and mass dampers are used.
It is an environmental concern but is used by many industries due to its low price and availability. You can contact the following numbers to buy sulfonic acid