Phthalic acid description

Phthalic acid is a simple dicarboxylic acid amoebic compound, a benzoic acid acquired with an added ortho-carboxylic acid. Phthalic acid is discussed a lot of frequently in affiliation to its ester derivatives or Phthalic anhydride, both used abundantly as automated plasticizers in the accomplish of polyvinylchlorides and added plastics. Esters of Phthalic acid are anticipation to action as endocrine disrupters in animals with deleterious furnishings aloft development. The Phthalic acid ester acquired di(2-ethylhexyl)phthalate is decidedly approved to baffle with autogenous about-face of tryptophan to niacin in rats. The monopotassium salt of Phthalic acid is advantageous as a primary acid accepted in assay and in the alertness of volumetric solutions.

Phthalic acid is produced by the catalytic blaze of naphthalene or ortho-xylene anon to phthalic anhydride and a consecutive hydrolysis of the anhydride.

Phthalic acid was aboriginal acquired by French chemist Auguste Laurent in 1836 by acid naphthalene tetrachloride. Believing the consistent actuality to be a naphthalene derivative, he called it "naphthalic acid". After the Swiss chemist Jean Charles Galissard de Marignac bent its actual formula, Laurent gave it its present name.Manufacturing methods in the nineteenth aeon included blaze of naphthalene tetrachloride with nitric acid, or, better, blaze of the hydrocarbon with angry sulfuric acid, application mercury or mercury(II) sulfate as a catalyst.