9,9-Dimethylfluorene Chemical Properties

Melting point:

96°C

Boiling point:

287 °C

Density 

1.040±0.06 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

form 

powder to crystal

color 

White to Almost white

λmax

301nm(EtOH)(lit.)

InChIKey

ZHQNDEHZACHHTA-UHFFFAOYSA-N

CAS DataBase Reference

4569-45-3(CAS DataBase Reference)

NIST Chemistry Reference

9H-Fluorene, 9,9-dimethyl-(4569-45-3)

Safety Information

Risk Statements 

20/21/22-36/37/38

Safety Statements 

26-37/39

HS Code 

2902.90.9000

9,9-Dimethylfluorene Usage And Synthesis

Definition

9,9-Dimethylfluorene is an organic electroluminescent material intermediate. The fluorene derivative is a kind of organic electroluminescent material commercialized at present, wherein 9, 9-dimethyl fluorene is an essential intermediate for synthesizing OLED material.

Synthesis

The method comprises taking dimethyl carbonate as a methylating agent under alkaline substances and reacting with fluorene in an organic solvent system within a certain temperature range to prepare the 9,9-Dimethylfluorene. The method uses dimethyl carbonate as a methylating agent so that the reaction process is stabilized and the economy is greatly improved; meanwhile, the use of dimethyl carbonate avoids the use of low-boiling-point hypertoxic such as methyl iodide, methyl bromide, and the like, is environment-friendly, and the generated wastewater has single component and is convenient to treat.

9,9-Dimethylfluorene(4569-45-3)Related Product Information

• N,N-Dimethylacetamide
• Dichlorodimethylsilane
• ETHANE
• Poly(dimethylsiloxane)
• Dimethyl sulfoxide
• Dimethyl fumarate
• Dacthal
• Dimethyl disulfide
• Dimethyl sulfone
• N,N-Dimethylformamide
• N,N-Dimethylaniline
• Fluorene
• Dimethyl sulfate
• Dimethyl ether
• Dimethyl carbonate
• 9,9-BIS(2-CYANOETHYL)FLUORENE
• 9[3[(1methylethyl)amino]propyl]-fluorene-9-carboxamide
• 9,9-Bis(4-hydroxyphenyl)fluorene