What is the chemical structure of phthalic anhydride?

C8H4O3
Phthalic anhydride/Formula

How is phthalic anhydride formed?

Phthalic anhydride is presently obtained by catalytic oxidation of ortho–xylene or naphthalene. When separating the phthalic anhydride from production by products such as o–xylene in water, or maleic anhydride, a series of “switch condensers” is required. Phthalic anhydride can also be prepared from phthalic acid.

What happens when phthalic anhydride?

When heated openly in evaporating dish it will soon react with the atmospheric Oxygen to trigger the Oxidation reaction. It has a very low melting point of 64 Deg. and the moment it starts to melt it forms a corrosive solution.

What are the physical properties of phthalic anhydride?

3.2.1Physical Description Phthalic anhydride appears as a colorless to white lustrous solid in the form of needles with a mild distinctive odor. Moderately toxic by inhalation or ingestion and a skin irritant. Melting point 64°F Flash point 305°F. Forms a corrosive solution when mixed with water.

What is the formula of phthalic acid?

C8H6O4
Phthalic acid/Formula

What is phthalic anhydride soluble?

Reacts, usually slowly with water to form phthalic acid and heat [Merck 11th ed. 1989]. The phthalic acid is somewhat soluble in water. PHTHALIC ANHYDRIDE reacts exothermically with water.

How is phthalic acid formed?

Phthalic acid is produced by the catalytic oxidation of naphthalene or ortho-xylene directly to phthalic anhydride and a subsequent hydrolysis of the anhydride. Phthalic acid was first obtained by French chemist Auguste Laurent in 1836 by oxidizing naphthalene tetrachloride.

Where is phthalic anhydride used?

Phthalic anhydride is also used as an intermediate in the production of pigments and dyes, agricultural, pharmaceutical, and several other chemical products. Phthalic anhydride containing materials are used in coatings applications for home appliances, automobiles, medical devices and furniture.

What is phthalic acid used for?

Phthalates (esters of phthalic acid) are a group of chemicals with a wide variety of industrial applications. Regarding cosmetics, they are used as plasticizers in products such as nail polishes and hair sprays, and as solvents and perfume fixatives in many other products.

Which is phthalic acid?

Phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2. It is an isomer of isophthalic acid and terephthalic acid. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale.

What type of compound is phthalic acid?

2-benzenedicarboxylic Acid
phthalic acid, also called 1, 2-benzenedicarboxylic Acid, colourless, crystalline organic compound ordinarily produced and sold in the form of its anhydride.