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  • Product Name:   9-Fluorenone
  • CAS No.:   486-25-9
  • Molecular Formula:   C13H8O
  • Molecular Weight :   180.2
  • Specification :   98%
  • Place of Origin:   China
  • Appearance :   
  • Document :   Download

Description of 9-Fluorenone

9-Fluorenone Chemical Properties

Melting point  80-83 °C(lit.)

Boiling point  342 °C(lit.)

density  0,9 g/cm3

refractive index  1.6309 (estimate)

Fp  163 °C

storage temp.  Store at RT.

form  Crystalline Powder or Flakes

color  Yellow

Water Solubility  insoluble

BRN  1636531

Stability: Stable. Combustible. Incompatible with strong oxidizing agents.


CAS DataBase Reference 486-25-9(CAS DataBase Reference)

NIST Chemistry Reference 9H-Fluoren-9-one(486-25-9)

EPA Substance Registry System 9H-Fluoren-9-one(486-25-9)

Safety Information

Hazard Codes  Xi

Risk Statements  36/37/38

Safety Statements  24/25-36/37/39-27-26

WGK Germany  3

RTECS  LL8925000

Hazard Note  Irritant


HS Code  29143900

Hazardous Substances Data 486-25-9(Hazardous Substances Data)

9-Fluorenone Usage And Synthesis

Intermediate for organic synthesis 9-fluorenone is an important intermediate for organic synthesis. It can be used to manufacture a variety of fine chemicals, mainly used as a modifier for the production of polymer materials, bisphenol fluorene, fluorenyl benzoxazine resin, acrylic resin, polyester, polycarbonate and epoxy resin. In the laboratory, fluorene was used as the raw material, dimethyl sulfoxide as the solvent, sodium hydroxide as the catalyst and oxygen as the oxidant. The oxidizing reaction was carried out by a tower packing reactor. The reaction solution was cooled and filtered to obtain a crude fluorenone. The content of crude fluorenone is 93%. We can recover 94% of the solvent and part of the crude fluorenone through distillation of the filtrate. The crude fluorenone is purified by directional crystallization to obtain yellow flaky fluorenone that have a purity of 99.8% or more.

Chemical properties Yellow crystal; Soluble in ethanol and ether, insoluble in water.

Application Intermediate for organic synthesis

Chemical Properties yellow flakes, chips or crystalline powder

Definition ChEBI: The simplest member of the class fluoren-9-ones that is 9H-fluorene bearing an oxo substituent at position 9.

Purification Methods Crystallise 9-fluorenone from absolute EtOH, MeOH or *benzene/pentane. [Ikezawa J Am Chem Soc 108 1589 1986.] Also recrystallise it twice from toluene and sublime it in a vacuum [Saltiel J Am Chem Soc 108 2674 1986]. It can be distilled under high vacuum. [Beilstein 7 H 465, 7 III 2330, 7 IV 1629.]

9-Fluorenone Preparation Products And Raw materials

Preparation Products 9-Bromo-9-phenylfluorene

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