Bisphen oxyethanol fluorene BPEF CAS 117344-32-8

【Chemical Name】 9,9-Bis[4-(2-hydroxyethoxy)phenyl]fluorene

【Other Name】 BPEF | Bisphenoxyethanolfluorene | BHEPF | BPHE | 4,4‘-(9-Fluorenylidene)bis(2-phenoxyethanol) | 2,2’-[9H-Fluorene-9,9-diylbis(benzene-4,1-diyloxy)]diethanol | 双膦芬 (Bisphosphine fluorene – Chinese trade name)

【CAS No.】 117344-32-8

【Molecular Formula】 C₂₉H₂₆O₄

【Molecular Weight】 438.51–438.52 g/mol

【Product properties】

| Property | Value |

| :--- | :--- |

| Appearance | White to almost white powder to crystal |

| Purity (GC) | ≥98.0% |

| Purity (HPLC) | ≥98.0% – ≥99.5% (high purity grade) |

| Melting Point | 160.0 – 166.0 °C |

| Boiling Point | 610.7±55.0 °C (predicted) |

| Density | 1.248±0.06 g/cm³ (predicted) |

| Solubility | Insoluble in water; soluble in methanol, acetone, toluene, DMSO |

| pKa | 13.95±0.10 (predicted) |

| Physical State (20°C) | Solid |

【Storage】 Store sealed in a dry, cool, dark place. Recommended temperature: Room temperature (<15°C) or 2–8°C. Avoid moisture and light.

【Packing】 Available in 5g, 25g, 100g, 500g, 1kg, and bulk packaging upon request.

【Application】

- High-refractive-index optical resins – Key monomer for polycarbonates, polyesters, and epoxy resins achieving n_D = 1.620–1.646 with near-zero birefringence (Δn as low as 0.00007). Used in smartphone lenses, camera lenses, automotive displays, LCD/OLED polarizing films.

- Engineering plastics – Building block for BPA‑free, high‑heat polycarbonates with excellent transparency and mechanical strength.

- UV‑curable coatings & adhesives – Monomer for UV‑curable epoxy acrylate oligomers in optical waveguides, protective films, semiconductor packaging.

- Advanced polymers – Used in fluorene‑based epoxy resins, polyurethanes, polyarylates, polyethers, polyesters with outstanding thermal stability and flame retardancy.

- Dental materials – Dimethacrylate derivative reduces polymerization shrinkage by ~22% vs. Bis‑GMA.

- Optical films – Modifies orientation birefringence in cellulose ester films for photographic and polarizer protection layers.

【Product Specification】

| Item | Specification |

| :--- | :--- |

| Purity (HPLC/GC) | ≥98.0% – ≥99.5% |

| Appearance | White to almost white powder/crystal |

| Melting Point | 160.0–166.0°C |

| Water Solubility | Insoluble |

| MDL Number | MFCD00216628 |

| HS Code | 2906.29.6000 / 29094990 |

| Storage Class | Room temperature, dark place |

| GHS Signal Word | Warning |