Product name:O-Phthalic anhydride
Molecular Formula: C8H4O3
Molecular Weight: 148.11
Product description:Phthalic anhydride reaction can happen hydrolysis, alcohol solution and ammonia solution, and aromatic hydrocarbons reaction synthesis of anthraquinone derivatives. Phthalic anhydride in industry is under five vanadium oxide catalyst, composed of naphthalene with air in 350 ~ 360 ℃ was prepared by gas phase oxidation and air oxidation of o-xylene is also available. Phthalic anhydride can be used instead of phthalic acid, the main reaction with one yuan alcohol ester formation, such as phthalic acid, dibutyl phthalate ester.Used in the paint industry; If with ethylene glycol and unsaturated acid condensation, the generation of unsaturated polyester resin, manufacturing insulating paint and glass fiber reinforced plastic. Phthalic anhydride is synthesis of benzoic acid, terephthalic acid, the raw material, also used for drug synthesis.