Skip to main content

Phosphorus trichloride

ADVERTISEMENT
Identification
Molecular formula
PCl3
CAS number
7719-12-2
IUPAC name
trichlorophosphane
State
State

At room temperature, it is a liquid.

Melting point (Celsius)
-93.60
Melting point (Kelvin)
179.55
Boiling point (Celsius)
76.10
Boiling point (Kelvin)
349.25
General information
Molecular weight
137.33g/mol
Molar mass
137.3330g/mol
Density
1.5740g/cm3
Appearence

Phosphorus trichloride is a colorless or slightly yellow fuming liquid. It has a pungent and highly irritating odor similar to hydrochloric acid. On exposure to moist air, it releases white fumes due to hydrolysis with atmospheric moisture.

Comment on solubility

Solubility of Trichlorophosphane

Trichlorophosphane, represented by the chemical formula PCl3, exhibits specific solubility characteristics that are important for its applications. Here are some key points regarding its solubility:

  • Solvent System: Trichlorophosphane is known to be soluble in organic solvents such as ethers and carbon tetrachloride.
  • Water Solubility: It is insoluble in water, primarily due to its non-polar nature which limits interactions with polar water molecules.
  • Physical State: As a liquid at room temperature, its solubility can vary significantly with temperature changes and the presence of other solutes.

In summary, while trichlorophosphane demonstrates compatibility with organic solvents, its lack of solubility in water is a crucial factor to consider when handling or using this compound in various chemical processes. Thus, understanding the solubility traits of PCl3 can greatly enhance its effective application in synthetic and analytical chemistry.

Interesting facts

Interesting Facts about Trichlorophosphane

Trichlorophosphane, also known as phosphorus trichloride, is a noteworthy compound in the realm of chemistry due to its unique properties and applications. Below are some fascinating insights:

  • Chemical Structure: Trichlorophosphane consists of a phosphorus atom bonded to three chlorine atoms, resulting in a pyramidal molecular geometry. This arrangement gives it distinct reactive properties, making it a valuable reagent in organic synthesis.
  • Industrial Applications: This compound is widely used in the production of various chemicals, including pesticides, flame retardants, and plasticizers. Its role in the synthesis of phosphorous-containing compounds is particularly significant.
  • Synthesis: Trichlorophosphane can be synthesized by the reaction of phosphorus with chlorine gas. This process must be handled with care due to the hazardous nature of chlorine.
  • Reactivity: It reacts vigorously with water, producing hydrochloric acid and phosphonic acid. Consequently, proper safety protocols should be adhered to when working with this compound.
  • Historical Context: The compound has been integral in the evolution of phosphorus chemistry, serving as a precursor to other phosphorus derivatives used in various industries.
  • Health and Safety: Trichlorophosphane is classified as a toxic substance. Exposure can lead to respiratory issues and skin irritation, emphasizing the need for protective equipment in laboratories.
  • Fun Fact: The compound is often used as a chlorinating agent, which shows its versatility in facilitating various chemical reactions!

Overall, trichlorophosphane plays a crucial role in both laboratory settings and industrial applications, making it an important compound in the study of chemistry.

Synonyms
PHOSPHORUS TRICHLORIDE
trichlorophosphane
Phosphorous chloride
PCl3
Phosphorus(III) chloride
Phosphine, trichloro-
Phosphorus chloride (PCl3)
Fosfortrichloride
Phosphortrichlorid
Trojchlorek fosforu
Phosphorus chloride (Cl6P2)
Fosforo(tricloruro di)
Phosphore(trichlorure de)
trichloridophosphorus
M97C0A6S8U
Chloride of phosphorus
HSDB 1031
EINECS 231-749-3
UNII-M97C0A6S8U
CHEBI:30334
EC 231-749-3
(PCl3)
[PCl3]
PHOSPHORUS (III) CHLORIDE
PHOSPHORUS CHLORIDE(PCL3)
PHOSPHORUS CHLORIDE(CL6P2)
231-749-3
Phosphorous trichloride
Trichlorophosphine
7719-12-2
Phosphorustrichloride
Phosphorus trichloride, ReagentPlus(R), 99%
Fosfortrichloride [Dutch]
MFCD00011438
Phosphortrichlorid [German]
Trojchlorek fosforu [Polish]
Fosforo(tricloruro di) [Italian]
Phosphore(trichlorure de) [French]
phosphoroustrichloride
UN1809
phosphorus-trichloride
phosphorous tri-chloride
Phosphorus(III)chloride
Phosphorous(III) chloride
Phosphorus trichloride, CP
phosphorous (III) chloride
phosphorus (III) trichloride
DTXSID5029687
PHOSPHORUS TRICHLORIDE [MI]
PHOSPHORUS TRICHLORIDE [HSDB]
AKOS015904450
UN 1809
BP-31000
NS00113734
P1611
Phosphorus trichloride [UN1809] [Poison]
Phosphorus trichloride, purum, >=97.0% (AT)
Q409707
Phosphorus trichloride, 99.999% trace metals basis