- Tianqiao District, Jinan City, Shandong Province, China
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Pyromellitic acid Cas 89-05-4 (MF: C10H6O8 , MW: 254.150) appears as a white crystalline powder, soluble in water and polar organic solvents. It shows strong acidity and is prone to dehydration to form pyromellitic dianhydride. It has high thermal stability and good reactivity with alcohols and amines.
| Item | Specification |
| Melting Point | 281–284.5 °C (lit.) |
| Boiling Point | 317.36 °C (rough estimate) |
| Density | 0.56 g/cm³ |
| Flash point | 325 °C |
| Water solubility | 1.5 g/100 mL (20 °C) |
| Solubility | 0.1 M NaOH: 0.2 M, clear, pale yellow. |
Pyromellitic acid is used in the synthesis of polyimides and high-temperature-resistant engineering plastics
Applied as a curing agent and crosslinking agent for epoxy resins
Pyromellitic acid is used in the preparation of plasticizers, coatings and adhesives
Served as an important intermediate in organic synthesis and pharmaceutical manufacturing
Pyromellitic acid is used in electronic materials for insulating films and photoresist components
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