Properties of Phosphorus Trichloride (PCl3)
Phosphorus trichloride (PCl3) is a chemical compound composed of phosphorus and chlorine atoms. It is a colorless and highly reactive liquid at room temperature and is primarily used in the chemical industry as a reagent for various chemical reactions.
The following table provides a comprehensive list of phosphorus trichloride 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 | 137.33 g/mol |
| Density | 1574 kg/m3 |
| Dynamic Viscosity | 0.529 mPa·s |
| Surface Tension (25°C) | 27.98 mN/m |
| Thermal Properties | Metric |
| Melting Point | -93 °C |
| Boiling Point | 76 °C |
| Thermal Conductivity | 0.128 W/m·K |
| Coefficient of Thermal Expansion (αV) | 1.9×10-3 1/°C |
| Vapor Pressure (25°C) | 16.1 kPa |
| Critical Constants | Metric |
| Critical Temperature (Tc) | 290 °C |
| Critical Molar Volume (Vc) | 260 cm3/mol |
| Electrical Properties | Metric |
| Relative Permittivity (εr) | 3.5 |
| Optical Properties | Metric |
| Refractive Index (589 nm) (21°C) | 1.5122 |
| Hazardous Data | Metric |
| NFPA Rating (Health) | 4 |
| NFPA Rating (Fire) | 0 |
| NFPA Rating (Reactivity) | 2 |
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.