Phthalic Anhydride Plants for Sale

Phthalic Anhydride (PA) is produced in two grades: flake (white solid) or molten (cleaer liquid). It has a characteristic, irritating odor, is slightly soluble in hot water, is hydrolysing to phthalic acid, and is soluble in alcohol and carbon disulfide. The major outlet for PA is in the manufacture of phthalate plasticizers, which accounts for over half of production. The main plasticizer in which it is used is dioctyl phthalate (DOP), which goes into polyvinyl chloride (PVC). The second-largest outlet is in unsaturated polyester resins (UPR), which are usually blended with glass fibers to produce fibreglass-reinforced plastics. The third-largest outlet is PA-based alkyd resins, which are used in solvent-based coatings.