Phosphorus Pentachloride is a greenish-yellow crystalline Solid Chemical compound with an irritating odour. It is decomposed by water to form hydrochloric and phosphoric acid and heat.
The Chemical Formula for Phosphorus Pentachloride is PCl₅
Phosphorous Pentachloride can be prepared by the action of dry chlorine on phosphorus trichloride.
Properties of Phosphorus Pentachloride
| Chemical Formula | PCl5 |
| Appearance | Greenish-yellow crystalline solid |
| Density | 2.1 g/cm³ |
| Molecular Weight/ Molar Mass | 208.24 g/mol |
| Boiling Point | 166.8 °C |
| Melting Point | 160.5 °C |
| Other names | Phosphorus (V) chloride, Pentachloro Phosphorane |
Uses of Phosphorus Pentachloride – PCl5
- Used as a chlorinating agent
- Used as a catalyst in the manufacture of acetyl cellulose, the plastic film on which motion pictures are printed.
- It is used in the manufacturing of penicillin and cephalosporin.
- Used to produce acid chlorides.
Harmful effects of Phosphorus Pentachloride – PCl5
- It is corrosive to metals and tissue.
- Long-term exposure to Phosphorus Pentachloride by inhalation can result in adverse health effects.
