Fluorene

Fluorene (CAS 86-73-7) is a polycyclic aromatic hydrocarbon (PAH) consisting of two benzene rings fused to a central cyclopentane ring. It is widely used as a key starting material and intermediate in high-performance polymers, pharmaceutical synthesis, OLED/electronics, and specialty chemicals. Thanks to its rigid, planar structure and excellent thermal stability, fluorene and its derivatives (especially 9,9-bisubstituted fluorenes) are essential building blocks for polyimides, polyethers, spiro compounds, and optoelectronic materials.

Technical Specifications

Packaging and Storage

• Net weight 25kg fiber drum.
• Keep container tightly closed in a dry place.

Key Advantages of Fluorene

• Extremely high thermal and oxidative stability
• Excellent solubility in common organic solvents
• Low ionic impurities in electronic grade

Main Applications of Fluorene

• Monomer for high-performance fluorene-based polyimides (CPI, transparent PI films for foldable displays)
• Starting material for 9-fluorenylmethoxycarbonyl (Fmoc) protecting group in peptide synthesis
• OLED and organic semiconductor materials (spirobifluorene derivatives)
• UV-light stabilizers and optical brighteners
• Pharmaceutical intermediates (e.g., anti-inflammatory and anticancer candidates)

Frequently Asked Questions (FAQs)

Does it sublime easily?
It has moderate sublimation tendency. We recommend sealed packaging and storage below 30°C to prevent losses.

Can it be used directly in food-contact or medical devices?
No. Fluorene itself is not approved for direct food contact or implantation. Only specific purified derivatives (e.g., certain polyimides) may obtain regulatory approval.

Is it considered a PAH of concern or carcinogenic?
Pure fluorene has low acute toxicity and is not classified as carcinogenic (IARC Group 3). However, it should be handled with standard chemical safety practices.

Where can I buy high-quality Fluorene?

You can contact us email [email protected] for offers and bulk orders.