Phthalic is the simplest aromatic dicarboxylic acid with the chemical formula C6H4 (CO2H) 2 and is one of three isomers of benzene carboxylic acid, as well as an isomer of isophthalic acid and terephthalate acid. In fact, this substance, which is a colorless and crystalline organic compound, is a benzene dicarboxylic acid from two carboxylic groups in ortho positions.
Phthalic production method
It was first discovered by the French chemist August Lauren in 1836 with the oxidation of naphtha tetrachloride. Knowing that the substance was derived from naphthalene derivatives, he called it naphthalene acid. Other methods of producing this substance include oxidation of naphthalene tetrachloride with nitric acid, or more simply, hydroxide oxidation with sulfuric acid sulfate, the use of mercury or mercury (II) sulfate as a catalyst.
Phthalic application
Although this material is not widely used in industry, its derivatives, phthalic anhydride, are a highly widely used chemical in various manufacturing sectors, mainly in the form of hydride to produce other chemicals such as dyes, perfumes, saccharin, phthalates and many more Other useful products are used.
If we want to refer in more detail to the applications of this material, it is not bad to consider that the esters of this material have been widely used in plastic manufacturing since the 1930s, as a common additive in paints, for example, for flexibility. Vinyl resins, as a diluent in the transport and storage of organic peroxides, for bonding cellulose films, as a stabilizing agent, carrier or solvent for artificial musk in fragrances and fragrances, as an additive in Lubricants, adhesives and insecticides are used.
