Methods of Manufacturing
PREPARED FROM PROPIONYL CHLORIDE AND BENZENE IN PRESENCE OF ANHYDROUS ALUMINUM CHLORIDE. NUMEROUS OTHER SYNTHESES. ... USUALLY SUPPLIED AS A LIQ.
From the Hock process for the production of phenol from isopropylbenzene; it is isolated from the residue of this process.
Oxidation of ethylbenzene with air or oxygen at 130 deg C and 0.5 MPa. Catalysts include cobalt salts or manganese salts of naphthenic or fatty acids.