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Polyacrylonitrile (CAS 25014-41-9), with the molecular formula (C₃H₃N)_n, is a white or pale yellow powder. It is stable at room temperature, resistant to acids and weathering, practically insoluble in water, and soluble in polar solvents such as dimethylformamide. It decomposes and carbonizes at high temperatures. It is primarily used in the production of acrylic fibers, carbon fiber precursors, coating modifiers, and membrane materials.
| Item | Specification |
| Melting Point | 317℃ |
| Boiling Point | N/A |
| Density | 1.184 g/cm³（25℃，lit.） |
| Flash point | N/A |
| Refractive index | 1.514 (20 °C) |
| Tg | 90–104 °C |
| Solubility | Soluble in strongly polar solvents such as dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and cyclobutanesulfonic acid; insoluble in water and common organic solvents. |
| Stability | Good chemical stability; resistant to acids, alkalis, and organic solvents; begins to decompose and discolor above 200°C.. |
Carbon Fiber Precursors (Core Application): As the primary raw material for high-performance carbon fibers, these are used in aerospace, wind power, and the lightweight manufacturing of high-end equipment.
Synthetic Fiber Textiles: Polyacrylonitrile is used to produce acrylic fibers as a wool substitute for clothing, blankets, knitted fabrics, and decorative textiles.
Functional Polymer Materials: It is used in the production of ultrafiltration membranes, adsorbent resins, ion exchange materials, and soundproofing and thermal insulation foam materials.
Chemical Additives and Composite Materials : Used as modifying components for coatings, reinforcing fillers for rubber, and weather-resistant composite additives.
Research and Specialty Applications: It is used in polymer modification research, electrochemical materials, and the synthesis of specialty high-temperature-resistant products.
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
We are always committed to delivering optimal chemical solutions for all application scenarios.
