Properties of Fluorine (F2)
Fluorine is a chemical element with the symbol (F) and atomic number 9. It is a highly reactive, pale yellow-green gas at room temperature and is the most electronegative element on the periodic table. Fluorine is commonly used in industries like electronics, pharmaceuticals, and the production of Teflon and various fluorinated chemicals.
The following table provides a comprehensive list of fluorine properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Molar Mass | 37.997 g/mol |
| Density (0°C) | 1.696 kg/m3 |
| Dynamic Viscosity (25°C) | 23.2 µPa·s |
| Thermal Properties | Metric |
| Melting Point | -219.6 °C |
| Boiling Point | -188.1 °C |
| Thermal Conductivity (25°C) | 0.027 W/m·K |
| Specific Heat Capacity (Cp) | 825 J/kg·K |
| Critical Constants | Metric |
| Critical Temperature (Tc) | -129 °C |
| Critical Pressure (Pc) | 5.21 MPa |
| Critical Density (ρc) | 574 kg/m3 |
| Optical Properties | Metric |
| Refractive Index (589 nm) | 1.000195 |
| Hazardous Data | Metric |
| NFPA Rating (Health) | 4 |
| NFPA Rating (Fire) | 0 |
| NFPA Rating (Reactivity) | 4 |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Fire Protection Guide to Hazardous Materials, 14th Edition. United States: National Fire Protection Association, 2010.