Product Name：Phosphorus oxychloride
Phosphorus oxychloride, an industrial chemical raw material, is a colorless transparent smoke liquid. Colorless transparent with pungent odor of the liquid, in the moist air intense smoke, hydrolysis into phosphoric acid and hydrogen chloride, further formation of HP2O4CL3.
Chemical formula: POCL3
Molecular weight: 153.33
Melting point: 1.25 ℃
Boiling point: 105.8 ℃
Water soluble: reacts exothermically
Appearance: transparent to pale yellow liquid
Flash: Non - combustible
Physical and chemical properties
Colorless clear liquid. It has a pungent smell. Strong smoke. It has hygroscopicity. Water and ethanol decompose into heat. Relative density (d25)1.675. Melting point 1.25c. Boiling point 105.8c. Moderate toxicity, median lethal dose (rat, oral)380mg/kg. Tear inducing and corrosive.
It is used to make phosphates such as diphenyl isooctyl phosphate, triethyl phosphate, plastic plasticizer, organophosphorus pesticide, long-acting sulfonamide drug and so on. Also can be used as dye intermediate, organic synthesis of chlorination agent and catalyst, flame retardant. Applications of electron-grade phosphorus trioxide in the solar energy industry, integrated circuits, separation devices, light prefabricated rods and other liquid phosphorus sources can also prepare phosphate esters. In the semiconductor industry, it is mainly used for n-type doping sources, with the best reaction effect at 0℃.
Toxicity and protection
This product decomposes into membrane acid and oxidized ammonia when exposed to water vapor. The toxicity is similar to phosgene. Inhalation of a large number of steam during the period of acute smoke, can cause upper respiratory tract irritation symptoms, pharyngitis, bronchitis; Serious cases may occur laryngeal edema ventricular rest, pneumonia, pulmonary edema, cyanosis, heart failure. Anemia, liver damage, proteinuria may also occur. Mouth burns digestive tract. Eye contact causes burns. Prolonged exposure to low concentrations may cause irritation of the mouth, eyes and respiratory tract.
Packaging storage and transportation
Storage management: store in a cool, dry and well-ventilated warehouse. Stay away from fire and heat. The storage temperature shall not exceed 25C, and the relative humidity shall not exceed 75%. The package must be sealed and keep away from moisture. It should be stored separately with reducing agent, active metal powder and alcohol. The storage area shall be equipped with emergency leakage treatment equipment and appropriate storage materials.
Transport management: the railway transport should be in strict accordance with the dangerous goods in the ministry of railways "rules on the transport of dangerous goods" for the distribution of dangerous goods. The packing should be complete and the loading should be safe. In the process of transportation, the container shall not leak, collapse, fall or damage. It is forbidden to mix with reducing agent, active metal powder, alcohol, edible chemicals, etc. The transport vehicle shall be equipped with leakage emergency treatment equipment during transportation. Transportation should be anti - sun, rain, anti - high temperature. Road transport should follow the prescribed route, do not stay in residential areas and densely populated areas.
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