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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. It is toxic and reacts readily with water to release hydrogen chloride.
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° PI 3 ...
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.
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 ...
A general formula for such cyclic compounds is [HPO 3] x where x = number of phosphoric units in the molecule. When metaphosphoric acids lose their hydrogens as H +, cyclic anions called metaphosphates are formed. An example of a compound with such an anion is sodium hexametaphosphate (Na 6 P 6 O 18), used as a sequestrant and a food additive.
The same imido compound also forms when the thermolysis is performed in toluene, but in this case the fate of the diphosphorus is unknown. P 2 has been suggested to form as an intermediate in the photolysis of P 4, [5] and in the presence of 2,3-dimethyl-1,3-butadiene the diphosphane resulting from Diels–Alder addition is again formed. [6]
Thiophosphoryl chloride is an inorganic compound with the chemical formula P S Cl 3. [5] It is a colorless pungent smelling liquid that fumes in air. It is synthesized from phosphorus chloride and used to thiophosphorylate organic compounds, such as to produce insecticides.
In chemistry, phosphorochloridites are a class of organophosphorus compound with the formula (RO) 2 PCl (R = organic substituent). They are pyramidal in shape, akin to regular phosphites (P(OR) 3 ). They are usually colorless and sensitive toward hydrolysis and, to some extent, oxidation to the corresponding phosphorochloridates ((RO) 2 P(O)Cl).