Pyromellitic Dianhydride
Product Description
| Product | Pyromellitic Dianhydride |
| CAS | 89-32-7 |
| Formula | C6H2(C2O3)2 |
| Synonym | 1,2,4,5-Benzenetetracarboxylic Dianhydride, 1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone |
Typical Product Specifications
| Melting Point | 282 - 288C |
| Boiling Point | 397 - 400C |
| Density | 1.68 g/cm^3 |
| Appearance | White or light yellow |
| Content | >= 99.5% |
| Neutralization Equivalent | 54.5 +- 0.2 |
| pH | 2.2 (3.9 gl) |
| Vapor Pressure | 63 mm hg (290 c) |
| Molecular weight | 218.12 |
| Solubility | g100 g in water, reacts to give tetra-acid |
| Notes | Pyromellitic Dianhydride is a very popular compound used mainly for producing polyimid resin and insulating paint. It is also a high temperature curing agent and plasticizer. |
| Class | Adhesives, Coatings and Sealants Chemicals, Plasticizers |
| Function | Plasticizers, Curing Agent |
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