Polyacrylonitrile
Polyacrylonitrile (CAS 25014-41-9) is a synthetic polymer with the linear formula (C3H3N)n. It is characterized by its high thermal stability and chemical resistance. Typically supplied with an average molecular weight of 150,000, it finds extensive use as a precursor for carbon fibres, in the production of acrylic fibres for textiles, and as a component in various industrial applications requiring durable, hydrophobic materials.

Carbon Fibre Precursor
Polyacrylonitrile serves as the primary precursor material for the manufacturing of high-strength carbon fibres. These fibres are crucial in aerospace, automotive, and sporting goods industries due to their exceptional strength-to-weight ratio.
Acrylic Fibre Production
It is a key component in the production of acrylic fibres, widely used in the textile industry for apparel, home furnishings, and industrial fabrics, offering durability and resistance to chemicals and weathering.
Membrane Technology
Polyacrylonitrile can be processed into membranes for applications such as water filtration and gas separation. Its chemical resistance makes it suitable for harsh separation environments.
Specialty Polymers and Materials
Used in the development of advanced materials, including hydrophobic coatings and polymer composites, leveraging its inherent resistance to moisture and chemical degradation.
| Linear formula | (C3H3N)n |
|---|---|
| Density | 1.184 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.514 |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Mol Wt | average Mw 150,000 (Typical) |
|---|---|
| Transition Temp | Tm 317 °CTg 85 °C |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Polyacrylonitrile (CAS 25014-41-9) used for?
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Polyacrylonitrile is primarily used as a precursor for carbon fibres and acrylic fibres, and in membrane technology and specialty polymer applications.
What is the CAS number and formula for Polyacrylonitrile?
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The CAS number for Polyacrylonitrile is 25014-41-9, and its linear formula is (C3H3N)n.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Polyacrylonitrile typically with an average molecular weight of 150,000. As a research-grade material, TSS does not represent it as USP, BP, or EP grade.
How should Polyacrylonitrile be handled safely?
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Handling requires appropriate personal protective equipment including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. It carries a WGK Germany rating of 3, indicating a high hazard to water.
How is Polyacrylonitrile packed and shipped?
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Products are carefully packed according to international shipping regulations and are exported globally by Tech Serve Solutions.
How can I request a quote or sample?
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To request a quote or sample, please contact our sales team through the website or by phone, providing your specific requirements.
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