|Melting point||131-134 ° C (lit.)|
|Boiling point||284 ° C (lit.)|
|Density||1,53 g / cm3|
|Vapor density||5.1 (vs air)|
|Vapor pressure||< 0.01 mm Hg (20 ° C)|
|Flash point||152 ° C|
|Water solubility||6 g / L (20 OC)|
Solubility: insoluble in cold water, easily soluble in hot water, ethanol, ether, benzene and other organic solvents
Phthalic anhydride and Polyols (such as glycerin, pentaerythritol) are polycondensated to form poly (aryl ester) resin, which is used in paint industry;
If it is polycondensated with ethylene glycol and unsaturated acid, unsaturated polyester resin is formed, which can be used to manufacture insulating paint and glass fiber reinforced plastics.
Phthalic anhydride is also a raw material for the synthesis of benzoic acid and terephthalic acid, and also used in drug synthesis.
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