Aromatic Hydrocarbons (or Arenos) are Hydrocarbons, which are made up only of hydrogen and carbon atoms, which form a cyclic compound and with resonant double bonds that are associated. They have a molecular formula CnHn, like benzene (C6H6). They are compounds that have exceptional stability. Due to its intense and pleasant aroma, a large number of its derivatives are called aromatic compounds. They are toxic.
Thanks to chemical stability in large quantities and associated with the structure of benzene and in general terms with all aromatic components. This is because they are flat, chemical, and cyclic structures that have numerous mixed double bonds, providing great electronic delocalization in your system.
All benzene derivatives, as long as the ring remains intact, are considered aromatic. Aromaticity can be extended to polycyclic systems, such as phenanthrene, anthracene, naphthalene and others more complicated, in which cations and anions can be included, such as pentadienyl, which is formed by the appropriate number of π electrons and also has the ability to create resonant shapes.
Aromatic hydrocarbons are important to the economy, and the economy has grown steadily since coal tar naphtha was used as a rubber solvent in the early 19th century. Currently, the most frequent uses of aromatic components as pure products are: synthetic rubber, paints, the chemical synthesis of plastics, explosives, pigments, detergents, perfumes, drugs and pesticides. They are also used as solvents, in the form of mixtures and in variable proportions, of gasoline.
Currently, the most frequent uses of aromatic components as pure products are: synthetic rubber, paints, the chemical synthesis of plastics, explosives, pigments, detergents, perfumes, drugs and pesticides.
Cumene is used as a high octane ingredient in jet fuels, as a raw material for the synthesis of phenol, as a solvent for cellulose and acetone paints and lacquers for the production of styrene by pyrolysis. As in a number of commercial petroleum-derived solvents, with boiling points between 150 and 160 ° C. It is a good solvent for greases and resins and, for this reason, it has been used as a substitute for benzene in many of its industrial uses.
The p-cymene is obtained by hydrogenation of monocyclic terpenes and is present in many essential oils. It is used primarily in conjunction with other solvents and aromatic hydrocarbons and is a by-product of the sulfite pulping process and as a thinner for lacquer and varnish.
Coumarin is used as an odor enhancer in soaps, as deodorant, tobacco, perfumes, and rubber products. It is also used in pharmaceutical preparations. In many countries it has been banned as a solvent and component of dry cleaning fluids, benzene has also been banned as a component of products intended for domestic use.
