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Phosphorus Trichloride

  • Product Name: Phosphorus trichloride
  • Other Names: Trichlorophosphane, Phosphorus(III) chloride, Phosphorous chloride
  • Cas No.: 7719-12-2
  • Purity: 99%
  • MF: PCl3
  • Appearance: Colorless to yellow fuming liquid
  • Package: Drum
  • Certificate: ISO
  • Application: it is a chemical compound that is primarily used in the chemical industry for various applications. It’s commonly utilized as a reagent in chemical reactions and synthesis processes.
  • Sample: Available

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Product Detail

Phosphorus trichloride can form hydrochloric acid fog in the air. It can stimulate and corrode skin and mucous membrane. Inhaling a large amount of vapor in a short period of time can cause upper respiratory tract irritation, laryngitis, bronchitis, and in severe cases, laryngeal edema can cause suffocation, pneumonia or pulmonary edema. Skin and eye contact may cause irritation or burns. Severe eye burns can cause blindness. Chronic effects: Prolonged exposure to low concentrations can cause eye and respiratory irritation. Can cause phosphorus toxic oral disease.

Product Parameter

Synonyms Trichlorophosphane, Phosphorus(III) chloride, Phosphorous chloride
Chemical Formula PCl3 CAS Number 7719/12/2
Molar mass 137.33 g/mol UN number 1809
Appearance Colorless to yellow fuming liquid
Odor unpleasant, acrid, like hydrochloric acid
Density 1.574 g/cm3
Melting point −93.6 °C (−136.5 °F; 179.6 K)
Boiling point 76.1 °C (169.0 °F; 349.2 K)
Vapor pressure 13.3 kPa
Refractive index 1.5122 (21 °C)
Flash point 76°C
Solubility Soluble in benzene, CS2, ether, chloroform, CCl4, halogenated organic solvents
reacts with ethanol
Solubility in water hydrolyzes
Stability Stable, but light sensitive. Incompatible with water, many metals, fluorine, acids,
variety of organic materials including acids, alcohols and reducing agents.
Reaction with water is violent and yields toxic gas.
Storage condition Store at RT.



1. Organic synthesis: Phosphorus trichloride is a commonly used organic synthesis reagent, often used in esterification reaction, etherification reaction, substitution reaction and a series of organic synthesis reactions. It can react with alcohols, acids, amines and other compounds to produce corresponding organic compounds such as ethers and acyl chloride.

2. Chemical catalyst: PCl3 can be used as a catalyst to participate in some chemical reactions. For example, it can catalyze the esterification of alcohol with acid anhydride, prompting the reaction rate to increase.

3. Manufacturing inorganic chemicals: Phosphorus trichloride is one of the important raw materials for many inorganic chemicals. For example, chemical phosphorus trichloride can be used to manufacture phosphoric acid, chlorinated phosphoric acid ester, chlorinated trisulfonate phosphate, etc.

4. Additives and additives: PCl3 can be used as an additive or additive for some chemical reactions to change the rate and direction of the reaction. It is also used in the production of certain polymers and synthetic fibers.

5. Laboratory applications: Phosphorus trichloride is also commonly used in some experimental operations in chemistry laboratories, such as for the removal of hydroxyl or phosphate groups from organic compounds, or as an intermediate for some chemical reagents.

Multiple uses of products

It use in Chemical Manufacturing,Agrochemical Industry,Pharmaceutical Industry,Dye and Pigment Industry,Plastics and Polymers Industry,Flame Retardant Industry