Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. It has a role as an allergen. It is a cyclic dicarboxylic anhydride and a member of 2-benzofurans.
Corrosive
Irritant
Health hazard
⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).
Phthalic anhydride is the cyclic dicarboxylic anhydride that is the anhydride of phthalic acid. It has a role as an allergen. It is a cyclic dicarboxylic anhydride and a member of 2-benzofurans.
| Physical Description | 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… |
| Color/Form | White, lustrous needles |
| Odor | Mild |
| Melting Point | 267.4 °F (NTP, 1992) |
| Boiling Point | 563 °F at 760 mmHg (sublimes) (NTP, 1992) |
| Flash Point | 305 °F (NTP, 1992) |
| Density | 1.2 at 275 °F 1.53 at 20 °C (solid) (USCG, 1999) - Denser than water; will sink |
| Solubility | Decomposes (NTP, 1992) |
| Vapor Pressure | 0.0002 mmHg at 68 °F ; 0.001 mmHg at 86 °F (NTP, 1992) |
| IUPAC Name | 2-benzofuran-1,3-dione |
| Molecular Formula | C8H4O3 |
| Molecular Weight | 148.11 g/mol |
| CAS | 85-44-9 |
| SMILES | C1=CC=C2C(=C1)C(=O)OC2=O |
| InChIKey | LGRFSURHDFAFJT-UHFFFAOYSA-N |
| Catalog No | KC.1610163 |
| Pack sizes | 500GM |
⚠️ For information only; not a substitute for the official SDS.