CAS No. 10025-87-3
Phosphorus Oxy Chloride is used in the manufacture of phosphate esters widely used in plasticizers, hydraulic fluids, lube oil additives, pesticides, and flame retardants. It can be a catalyst, chlorinating agent, and solvent in cryoscopy, intermediate for dyestuffs, extraction agent for uranium, cross-linking agent or doping source.
Phosphorus Oxychloride is a colorless or slightly yellow fuming liquid with a pungent odour. It is toxic and corrosive, soluble in several common organic solvents. Reacts violently with water. Incompatible with strong oxidizing agents, alcohols, bases (including amines). Stable under normal conditions of use and storage
|Molar Mass||153.33 g/mol|
|Appearance||Clear Colorless Fuming Liquid|
|Specific Gravity @ 25oC||1.640 –1.680 g/cm3|
|Melting Point||1.25 °C (34.25 °F; 274.40 K)|
|Boiling Point||105.8 °C (222.4 °F; 378.9 K)|
|Solubility in Water||Reacts|
MANUFACTURE OF ESTERS
Phosphorus Oxychloride is used in the manufacture of Phosphate Esters. The esters are widely used in plasticizers for PVC, non-flammable hydraulic fluids, lube oil additives, pesticides, and flame retardants. Tri aryl phosphate esters such as Tri Phenyl Phosphate and Tri Cresyl Phosphate are used as flame retardants and plasticizers for PVC. Meanwhile tri alkyl esters such as Tri Butyl Phosphate are used as liquid-liquid extraction solvents.