Phthalic Anhydride

Phthalic Anhydride (C8H4O3) is a toxic, colorless solid with mild odor. It is a skin irritant that is used in the manufacture of artificial resins. Because it is flammable, we recommend a safe chemical storage building that meets specific regulations for storing Phthalic Anhydride. Please review our fire rated products: View All Chemical Storage Products

Phthalic Anhydride Storing Details

  • Flammable Details: May be combustible at high temperature.
  • Storage Details: Keep separated from incompatible substances, such as oxidizers. Store and handle in accordance with all current regulations and standards. Store in compliant, approved flammables storage buildings, separated from oxidizers and sources of ignition.
  • Compatible Details: Strong oxidizers, water [Note: Converted to phthalic acid in hot water.]
  • Description: Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics.
  • Classification: CLASS 8
  • Brand Name: n/a

Phthalic Anhydride Properties

Formula Density Boiling Point; IUPAC ID Molar Mass Soluble In Melting Point
C8H4O3 1.53 g/cm³ 56°F (29°C) 2-benzofuran-1,3-dione 148.1 g/mol Cold water and diethyl ether 267.°F (13°C)




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