[Chemical Knowledge]：The properties, uses, upstream and downstream raw materials and storage methods of diisooctyl phosphite, is diisooctyl phosphite dangerous?

PROPERTIES OF PHOSPHORIC BENZENE DIPHENYL ESTER

Phenyl bis(2-ethylhexyl) phosphite, often referred to simply as DOVERPHOS-2132, is an important organophosphorus compound. Its chemical formula is C22H41O3P and its molecular weight is 384.54g/mol. This compound appears as a colorless to pale yellow liquid with good thermal stability and oxidation resistance. Its boiling point is higher than 300°C, has low volatility at room temperature, and is not volatile, so it is very stable in industrial applications. Phosphite benzene two isooctyl ester has good solubility, can be dissolved in a variety of organic solvents, such as toluene, ethanol and ether.

Use of diphenyl isooctyl phosphite

Diphenyl isooctyl phosphite is mainly used as a heat stabilizer and antioxidant for polymers. In the plastics industry, it is often used in the production process of polyvinyl chloride (PVC), polyolefins (such as polyethylene and polypropylene), polystyrene and other engineering plastics, and can effectively prevent the processing and use of polymer materials. Thermal degradation and oxidative degradation. It is also used as an additive for lubricating oil and grease, which can improve lubrication performance and extend the service life of equipment. In the synthetic resin and rubber industries, diisooctyl phosphite is also used as an antioxidant to prevent oxidative degradation of materials during processing.

Upstream raw materials

The production of diisooctyl phenyl phosphite involves a variety of chemical raw materials and intermediates. Its main upstream feedstocks include phosphorous acid, phenol and 2-ethylhexanol. Phosphorous acid is an important base material for the production of phosphites, while phenol provides the phenyl moiety and 2-ethylhexanol provides the isooctyl ester group. These raw materials are esterified to form diphenyl isooctyl phosphite. The specific reaction process is usually carried out under the action of a catalyst to improve the reaction efficiency and product yield. Since the supply and price fluctuations of these raw materials will directly affect the production cost and market price of diphenyl isooctyl phosphite, it is necessary to pay close attention to and manage the raw material market.

Downstream Applications

The downstream application of phosphite is very extensive, covering plastics, rubber, lubricants, coatings and other industries. In the plastics industry, as a stabilizer for PVC, diphenyl isooctyl phosphite can significantly improve the heat resistance and oxidation resistance of the material and extend the service life of the product. In the rubber industry, as an antioxidant, it can improve the aging resistance of rubber products and prevent the oxidation and degradation of rubber in high temperature environments. Diphenyl isooctyl phosphite is widely used in lubricating oil and grease, which can improve the lubrication performance, reduce mechanical wear and prolong the maintenance period of equipment. In the coating industry, it is also used as a stabilizer to improve the weather resistance and aging resistance of the coating.

storage method

Due to the easily oxidized nature of diphenylisooctyl phosphite, its storage method requires special attention. Diphenyl isooctyl phosphite should be stored in a sealed container to avoid prolonged contact with air to prevent oxidative deterioration. The storage environment should be kept dry and cool, avoiding direct sunlight and high temperature to prevent thermal decomposition. The storage place should be far away from fire source and oxidant to prevent fire and explosion accidents. During transportation, special transportation tools must be used to ensure that the packaging is intact to avoid collisions and leaks. Personnel should wear protective equipment when handling and handling diphenyl isooctyl phosphite to avoid skin contact and inhalation of its vapors.

market prospect analysis

With the growing global demand for high-performance materials, the market prospect of diphenyl isooctyl phosphite is very broad. The rapid development of the plastics and rubber industry, especially the increasing demand for high-performance materials in the automotive industry and the electronic and electrical industry, has promoted the growth of the demand for diisooctyl phosphate. With the increasingly stringent environmental regulations, the demand for low volatility and high stability additives is also increasing, which provides new opportunities for the market of diphenyl isooctyl phosphite. In the future, with the continuous progress of technology and the continuous expansion of new application fields, the market demand for diphenyl isooctyl phosphite is expected to continue to grow.

Environmental and Safety Considerations

In the production and use of diphenyl isooctyl phosphite, environmental protection and safety issues must be paid full attention. In the production process, it is necessary to strictly control the discharge of waste gas, waste water and solid waste to ensure that environmental protection standards are met. Production enterprises should strengthen safety management to ensure the safety of production equipment and operators. In the process of use, it should be avoided from leaking into the environment to prevent pollution to water and soil. Discarded diisooctyl benzene phosphite should be treated in accordance with the relevant provisions of hazardous waste treatment to prevent harm to the environment and human health.

Conclusion

As an important organic phosphorus compound, diphenyl isooctyl phosphite has a wide range of industrial applications. Its excellent thermal stability and oxidation resistance make it widely used in plastics, rubber, lubricants and coatings industries. Although there are certain environmental and safety challenges in the production and use process, with the advancement of technology and the improvement of environmental protection regulations, these problems can be effectively controlled. In the future, with the increasing demand for high-performance materials, the market prospect of diphenyl isooctyl phosphite will be broader.