The Phthalic Anhydride, available in 1 kg packages, is classified under Aromatic Building Blocks. It has a molecular weight of 148.12 g/mol and is part of the Carboxylic acid anhydrides substance group. This chemical requires safety precautions such as wearing safety gloves and goggles, and it carries a caution label due to its corrosive nature. The preferred name for this compound is Phthalic Anhydride, with an IUPAC name of 2-benzofuran-1,3-dione. It sublimates at 563°F and melts at 267.4°F. It is heavier than air and will sink. Handling this chemical may pose harm if swallowed, as indicated by the Hazard Statement "Harmful if swallowed.

• CAS Number: 85-44-9
• Molecular Formula: C8H4O3
• Molecular Weight: 148.11
• Exact Mass: 148.016043985
• Boiling Point: 563 °F at 760 mmHg (sublimes) (NTP, 1992)
• Melting Point: 267.4 °F (NTP, 1992)
• Vapour Density: 5.1 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
• GHS Signal Word: Danger
• Hazard Statements:
• H302: Harmful if swallowed [Warning Acute toxicity, oral]