9,9-Dimethylfluorene
- CAS NO.：4569-45-3
- Empirical Formula: C15H14
- Molecular Weight: 194.27
- MDL number: MFCD00114670
- EINECS: 1312995-182-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-27 23:56:54
What is 9,9-Dimethylfluorene?
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.
Properties of 9,9-Dimethylfluorene
| 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.) |
| CAS DataBase Reference | 4569-45-3(CAS DataBase Reference) |
| NIST Chemistry Reference | 9H-Fluorene, 9,9-dimethyl-(4569-45-3) |
Safety information for 9,9-Dimethylfluorene
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for 9,9-Dimethylfluorene
| InChIKey | ZHQNDEHZACHHTA-UHFFFAOYSA-N |
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