Isophthalic Acid (Benzene-1,3-dicarboxylic acid / PIA)
C8H6O4
121-91-5
204-506-4
| # | Parameter | Standard |
|---|---|---|
| 1 | Appearance | White crystalline solid |
| 2 | Odor | Odorless |
| 3 | Solubility | Very slightly soluble in water |
| 4 | Melting Point | 348°C (in sealed tube) |
| 5 | Density | ~1.526 g/cm³ |
| 6 | Molecular Weight | 166.13 g/mol |
| 7 | Purity | ≥ 99.5% (PIA grade) |
It is primarily used in the production of unsaturated polyester resins, where higher chemical resistance and durability are required. In practice, it is chosen when standard resin systems are not sufficient.
Because it improves resistance to moisture, chemicals, and temperature. This becomes important in applications like tanks, pipes, and marine components exposed to aggressive environments.
It enhances structural stability and reduces the risk of degradation over time. Even small formulation adjustments can significantly extend the service life of the final product.
Consistency of quality, reliable logistics, and proper storage conditions are key. Variations in raw material can impact resin processing and final performance.
Yes. Many industrial buyers prefer bulk supply to ensure uninterrupted production and better cost control over time.
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