Product Description
Polyacrylonitrile (PAN) is a high-performance synthetic polymer valued for its excellent chemical stability, favorable thermal properties, and versatile processing characteristics. It serves as an important raw material in the production of acrylic fibers and high-performance carbon fibers. Due to its outstanding material properties, PAN is widely used in advanced textile manufacturing, carbon fiber production, filtration membrane development, and composite material applications.
Product Parameters
| Melting point | 172-175 °C(lit.) |
| Boiling point | 285 °C(lit.) |
| Density | 1.32 |
| Vapor density | 3.81 (vs air) |
| Vapor pressure | 1 mm Hg ( 132 °C) |
| Refractive index | 1.6320 |
| Fp | 165 °C |
| Storage temp. | Store below +30°C. |
| Solubility | H2O: 50 mg/mL, clear |
| Pka | 10.35(at 20℃) |
| Form | Needle-Like Crystals or Crystalline Powder |
| Color | White to off-white |
| Odor | odorless |
| Water Solubility | 70 g/L (20 ºC) |
| Sensitive | Air & Light Sensitive |
| Merck | 14,4808 |
| BRN | 605970 |
| Henry's Law Constant | (x 10-9 atm?m3/mol): <2.07 at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: 15-min ceiling 2, IDLH 50; OSHA PEL: TWA 2; ACGIH TLV: TWA 2 (adopted). |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, oxygen, ferric salts. Light and air-sensitive. Discolours in air. |
| InChIKey | QIGBRXMKCJKVMJ-UHFFFAOYSA-N |
| LogP | 0.59 at 20℃ |
| CAS DataBase Reference | 123-31-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Hydroquinone(123-31-9) |
| IARC | 3 (Vol. 15, Sup 7, 71) 1999 |
| EPA Substance Registry System | Hydroquinone (123-31-9) |
Safety Information
| Hazard Codes | Xn,N |
| Risk Statements | 22-40-41-43-50-68-R68-R50-R43-R41-R40-R22 |
| Safety Statements | 26-36/37/39-61-S61-S36/37/39-S26 |
| RIDADR | 2662 |
| WGK Germany | 3 |
| RTECS | MX3500000 |
| Autoignition Temperature | 930 °F |
| TSCA | Yes |
| HazardClass | 9 |
| PackingGroup | III |
| HS Code | 29072210 |
| Hazardous Substances Data | 123-31-9(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 320 mg/kg (Woodard) |
| IDLA | 50 mg/m3 |
Application Scenarios
Carbon Fiber Precursor – Serves as a primary precursor for manufacturing high-performance carbon fibers. PAN-based carbon fibers offer excellent tensile strength, high stiffness, and a favorable strength-to-weight ratio, making them suitable for advanced engineering applications.
Textile Applications – Widely used in acrylic fiber production, providing good weather resistance, dimensional stability, and durability. PAN-based fibers are suitable for apparel, protective textiles, and various industrial textile applications.
Filtration and Separation Systems – Used in the development of specialized membrane materials for water purification, wastewater treatment, and industrial gas separation, offering versatile solutions for filtration and separation processes.
Advanced Composite Materials – Contributes to the production of carbon fiber-reinforced polymer composites with excellent mechanical strength and lightweight characteristics. These materials are widely applied in automotive manufacturing, aerospace engineering, and other high-performance industrial sectors.
