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Phthalic anhydride

Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid. It was the first anhydride of a dicarboxylic acid to be used commercially. This white solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. In 2000, the worldwide production volume was estimated to be about 3 million tonnes per year.
 
Phthalic anhydride appears as a colorless to white lustrous solid in the form of needles with a mild distinctive odor. Moderately toxic by inhalation or ingestion and a skin irritant. Melting point 64 °F Flash point 305 °F. Forms a corrosive solution when mixed with water. Used in the manufacture of materials such as artificial resins.
 
The most probable human exposure to phthalic anhydride is through skin contact or inhalation during manufacture or use. 
 
One 20 foot container can hold 18MT, and one 40 foot container can hold 27MT, there are two different packages, 25kg and 500kg bag. 

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