What is Phosphorus oxychloride?

Phosphorus oxychloride is a type of industrial raw material. It is a achromatic and cellophane liquid, and it has an abhorrent acid odor. It will smoke acutely in baking air. Its about body is 1.68, melting point is 1.25℃, baking point is 105.1℃. It break down into phosphoric acid and hydrogen chloride in baptize and ethanol. When al of a sudden accumulated with a ample bulk of water, an acute acknowledgment may occur. POCl3 reacts with baptize and alcohol to actualize phosphoric acid or phosphate. If alcohol replaces the baptize in the reaction, the end artefact will be trialkyl phosphate. This type of acknowledgment generally occurs in pyridine or ammonia, as it absorbs the produced HCl to activate the reaction. When catalyzed by a Lewis acid such as manganese chloride, POCl3 and a ample bulk of phenol (ArOH) heats to aftermath triaryl phosphate, such as in the acknowledgment below: 3 C6H5OH + O=PCl3 → O=P(OC6H5)3 + 3 HCl. Phosphorus oxychloride is a Lewis base, and it produces compounds with abounding Lewis acids, such as in its acknowledgment with titanium tetrachloride: Cl3P5+O− + TiCl4 → Cl3P5+O-−TiCl4. Its adduct with aluminum chloride (POCl3•AlCl3) is actual stable, and appropriately POCl3 is used to abolish the AlCl3 in the end articles of Friedel-Crafts reactions. In the attendance of AlCl3, POCl3 reacts with hydrogen bromide to actualize POBr3.

Phosphorus oxychloride can be used as a semiconductor dopant, and it is a raw actual for light-conducting fibers. It is broadly used in pesticides, pharmaceuticals, dyes, phosphates and blaze retardant production. It is a raw actual for bearing amoebic phosphorus herbicide and chlordimeform, and it is a plasticizer in artificial production. Phosphorus oxychloride is aswell used in the chlorination of long-acting sulfa drugs, is an average in dye assembly and a agitator in amoebic amalgam of chlorinating agents, and it is an extracting abettor in uranium mining. It is aswell used in bearing pharmaceuticals.