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Fluorene

CAS Number
86-73-7
EC Number
201-695-5
Chemical Formula
C13H10
Molecular Weight
166.22 g/mol

Description

Fluorene (CAS 86-73-7 ), also known as o-biphenylenemethane, is a polycyclic aromatic hydrocarbon used as a core building block in the synthesis of advanced organic materials and pharmaceutical intermediates. Its rigid, planar structure makes it a preferred starting material where precise molecular architecture is required in downstream synthesis. In electronics and optoelectronics, it serves as a foundational monomer. Fluorene is used for polyfluorene-based polymers in organic light-emitting diodes (OLEDs) and organic photovoltaic devices. Pharmaceutical manufacturers use it as an intermediate in the synthesis of active ingredients. The dibenzofuran-adjacent scaffold supports target binding profiles in medicinal chemistry. In specialty polymer production, derived monomers are incorporated into high-performance engineering resins and optical films. These materials are valued for their thermal stability and controlled refractive index. Biotechnology applications include its use as a precursor in fluorescent probe synthesis and labeled reagent development. Fluorene is supplied as a white to off-white crystalline solid or flake. It is available in technical grade for industrial polymer and chemical synthesis applications, as well as in high-purity grades. The high-purity grades (98%–99%+) are suited for pharmaceutical intermediate and electronic material manufacturing. Packaging options typically range from kilogram-scale laboratory quantities to bulk industrial supply. Contact us for supply of Fluorene Request Quote

Other Names (Synonyms)

o-biphenylenemethane | Fluoren | 9H-fluorene | 2,3-Benzindene | 2,2'-Methylenebiphenyl | o-Biphenylmethane | Methane, diphenylene-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point116-117 °C
Boiling Point295 °C
Density1.203 g/cm³ @ Temp: 0 °C
Flash Point151 °C
AppearanceFluorene, when pure, is found as dazzling white flakes or small, crystalline plates. It is fluorescent when impure. Polycyclic aromatic hydrocarbons (PAHs) are compounds containing multiple benzene rings and are also called polynuclear aromatic hydrocarbons.
ColorAlmost white to light brown
FormCrystalline Powder
Water Solubilityinsoluble
Vapor Pressure13 hPa (146 °C)
Refractive Index1.6470
Log P4.164

Safety & Handling

Warning
GHS09· Environment

Hazard Statements

H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P273Avoid release to the environment.
P391Collect spillage.
P501Dispose of contents/container in accordance with local regulations.

Trade & Regulatory

HS Code29029080
UN Number3077
ADR Class9
Packing GroupIII
Storage Class11 - Combustible Solids
WGK (Germany)3