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Phosphorus trichloride is an inorganic compound with the chemical formula PCl 3. A colorless liquid when pure, it is an important industrial chemical , being used for the manufacture of phosphites and other organophosphorus compounds .
Chemical formula CAS number Melting point Boiling point P–X bond length X–P–X bond angle Dipole moment; PF 3 Phosphorus trifluoride [7783-55-3] -151.5°C -101.8°C 156 pm 96.3° 1.03 D PCl 3 Phosphorus trichloride [7719-12-2] -93.6°C 76.1°C 204 pm 100° 0.56 D PBr 3 Phosphorus tribromide [7789-60-8] -41.5°C 173.2°C 222 pm 101°
Near room temperature, the compound degrades to give phosphorus trichloride and an ill-defined phosphorus monochloride: P 2 Cl 4 → PCl 3 + 1/n [PCl] n. The compound adds to cyclohexene to give trans-C 6 H 10-1,2-(PCl 2) 2. [1]
Phosphoryl chloride (commonly called phosphorus oxychloride) is a colourless liquid with the formula P O Cl 3. It hydrolyses in moist air releasing phosphoric acid and fumes of hydrogen chloride. It is manufactured industrially on a large scale from phosphorus trichloride and oxygen or phosphorus pentoxide. [4] It is mainly used to make ...
Trichloride may refer to: The trichloride ion, a polyhalogen ion; Actinium trichloride, AcCl 3; ... Osmium trichloride, OsCl 3; Phosphorus trichloride, PCl 3, a ...
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet for this chemical from a reliable source such as SIRI, and follow its directions.
Phosphite esters are typically prepared by treating phosphorus trichloride with an alcohol. For alkyl alcohols the displaced chloride ion can attack the phosphite, causing dealkylation to give a dialkylphosphite and an organochlorine compound. [1] [2] The overall reaction is as follows: PCl 3 + 3 C 2 H 5 OH → (C 2 H 5 O) 2 P(O)H + 2 HCl + C 2 ...
Methyldichlorophosphine is produced by alkylation of phosphorus trichloride with methyl iodide followed by reduction of the resulting phosphonium salt with iron powder: [2] [3] CH 3 I + PCl 3 + AlCl 3 → [CH 3 PCl 3 ] + AlCl 3 I −