Phosphorus Trichloride

PCl₃

IUPAC: Phosphorus trichloride

CAS: 7719-12-2

Overview

Phosphorus trichloride is one of the most important phosphorus compounds in industrial chemistry, used to make pesticides, plasticizers, and flame retardants.

Composition

Element Symbol Atoms Atomic Mass
Phosphorus P 1 30.9740
Chlorine Cl 3 35.4500

Elemental Composition

Uses

  • Pesticide synthesis
  • Plasticizer production
  • Flame retardant precursor

Fun Facts

  • About 300,000 tonnes produced annually worldwide

Safety

  • ⚠ Corrosive
  • ⚠ Toxic
  • ⚠ Releases HCl on contact with moisture

Structure

SMILES

P(Cl)(Cl)Cl

Properties

Type
inorganic
State
liquid
Molar Mass
137.33 g/mol
Density
1.5740 g/cm³
Melting Point
-93.0 °C
Boiling Point
76.1 °C
Solubility
decomposes

Molecular Descriptors

Exact Mass
135.8803
XLogP
2.3
TPSA
0.0 Ų
H-Bond Donors
0
H-Bond Acceptors
0
Rotatable Bonds
0
Heavy Atoms
4
Complexity
8.0

Frequently Asked Questions

What is Phosphorus Trichloride?
Phosphorus Trichloride (PCl₃) is a inorganic compound with the IUPAC name Phosphorus trichloride.
What is the molecular weight of Phosphorus Trichloride?
Phosphorus Trichloride has a molar mass of 137.33 g/mol.
What state is Phosphorus Trichloride at room temperature?
Phosphorus Trichloride is a liquid at room temperature.
Is Phosphorus Trichloride organic or inorganic?
Phosphorus Trichloride is classified as an inorganic compound.
What elements make up Phosphorus Trichloride?
Phosphorus Trichloride (PCl₃) is composed of Phosphorus (P), Chlorine (Cl).