Phthalic Acid Formula
Chemicals like dyes, phthalates, saccharin, perfumes, and many other useful products are produced by using phthalic acid as an anhydride. Isophthalic acid and terephthalic acid are isomers of the Phthalic Acid Formula. A great French chemist, Auguste Laurent invented this acid by oxidizing naphthalene tetrachloride.
Phthalic Acid Structural Formula
Benzene dicarboxylic acids contain two carboxy groups at ortho positions, such as phthalic acid. The metabolite plays a role in xenobiotic metabolism in humans. Phthalate(1-) and phthalate(2-) combine to form this conjugate acid.
Physical Properties of Phthalic Acid
- The colourlessness of the Phthalic Acid Formula is due to its chemical composition.
- Phthalic Acid has a molecular mass of 166.132 grams per mole.
- Dibasic acid is what it is.
- Phthalic Acid Formula has a melting point of 207°C.
- Phthalic Acid has a density of 1.593 grams per cubic centimeter.
- 0.6g of it dissolves in 100mL of water.
- Phthalic Acid Formula is an organic crystalline compound that is aromatic in nature.
Chemical Properties of Phthalic Acid
- Phthalic Acid Formula is reduced with sodium amalgam in the presence of water to generate 1,3-cyclohexadiene derivatives.
- A reaction between Phthalic Acid Formula C6H4(COOH)2 and alcohol (C2H5OH) produces phthalic acid esters, which are used in diffusion pumps and to replace mercury in manometers.
- Monoperoxy Phthalic Acid is generated when Phthalic anhydride is treated with alkaline hydrogen peroxide in the cold.
C6H4(CO)2O + H2O2 ⇢ C8H6O5
Production of Phthalic Acid
Naphthalene or ortho-xylene are catalytically oxidized to phthalic anhydride followed by hydrolysis of the anhydride to produce Phthalic Acid Formula.
By oxidising naphthalene tetrachloride, French chemist Auguste Laurent obtained Phthalic Acid Formula in 1836. He named it “naphthalic acid” since he believed it was a naphthalene derivative. Laurent gave it its present name after Swiss chemist Jean Charles Galissard de Marignac determined its correct formula. Nitric acid or fuming sulfuric acid was used to oxidise naphthalene tetrachloride in the nineteenth century, using mercury or Mercury(II) Sulfate as a catalyst.
Phthalic Acid Uses
- In addition to dyes, perfumes, phthalates, and saccharin, anhydrous Phthalic Acid Formula is used in the production of many chemicals.
- In consumer goods, construction materials, and commodities, phthalic acid esters (Phthalates) are widely used.
- The presence of phthalates in food and the environment is common. Therefore, they are found in high concentrations in the air and dust of homes and workplaces.