Syndiotactic Polyacrylonitrile (PAN)

polymer

Syndiotactic polyacrylonitrile (PAN) is a high-performance engineering thermoplastic characterized by a regular, alternating stereochemical structure that differs from typical atactic PAN. This ordered molecular arrangement imparts enhanced thermal stability and crystallinity compared to conventional PAN, making it suitable for demanding thermal and chemical environments. The material is primarily used in applications requiring superior heat resistance, chemical durability, and mechanical performance, particularly in aerospace composites, protective textiles, and industrial filtration systems where standard PAN grades are insufficient.

aerospace composite precursorshigh-temperature textilesthermal protective clothingindustrial filtration membraneschemical-resistant fiberscarbon fiber precursor

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Glass Transition Temperature(Tg)	256.7	°F	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Syndiotactic Polyacrylonitrile (PAN)

Thermal Properties

Regulatory Screening

Environmental

Safety & Biocompatibility