Product Name : Phthalic Anhydride
Synonyms : 1,3-Isobenzofuranidone; 1,3-Dioxophthalan; Phthalandione; 1,3 Phthalandione; 1,2-Benzenedicarboxylic acid anhydride; Phthalic acid anhydride; 1,2-Benzenedicarboxylic anhydride; 1,3-dihydro-1,3-dioxoisobenzofuran;
Brief History : Phthalic anhydride was first reported by the French chemist Auguste Laurent in 1836.
About the Product : Phthalic anhydride, an organic compound, is the anhydride of phthalic acid. It is a white crystalline solid. It is an important industrial chemical and used for production of plasticizers for plastics. It I also used as an intermediate in organic chemistry. The most important reaction of Phthalic Anhydride is with alcohols or diols and which will produce esters or polyesters.
Product Identification Features :
CAS Number: 85-44-9
H.S. Code: 2917.35
Chemical formula: C6H4 (CO) 2O
Chemical Properties:
Melting point: -130-131 C
Boling point: 284 C
Specific gravity: 1.53
Solubility in water: 6g/l
Vapour density: 5.1
Production Process : Phthalic anhydride is produced by catalytic oxidation of ortho-xylene and naphthalene. The catalyst used for the oxidation of xylene is vanadium pentoxide (V2O5).
C6H4(CH3)2 + 3 O2 → C6H4(CO)2O + 3 H2O
C10H8 + 4.5 O2 → C6H4(CO)2O + 2 H2O + 2 CO2
Uses :
