[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods, triphenyl phosphite

Properties of diphenyl isodecyl phosphite

diphenyl isodecyl phosphite (Chemical Abstracts Service No. 26544-27-4) is an organophosphorus compound that typically appears as a colorless or pale yellow transparent liquid. Its molecular formula is C30H51O3P and its molecular weight is 486.7g/mol. Its density is about 0.98g/cm³, the boiling point is above 300°C, it has high thermal and chemical stability, and it is not volatile. It is insoluble in water, but easily soluble in a variety of organic solvents, such as ethanol, benzene and chloroform. The phosphorus atom in its chemical structure gives it unique reactivity, especially in terms of oxidation resistance and thermal stabilization.

Use of diphenyl isodecyl phosphite

diphenyl isodecyl phosphite is widely used in the plastics and rubber industries, mainly as a stabilizer and antioxidant. Its main uses include:

1. PVC stabilizer: In the production process of polyvinyl chloride (PVC) resin, it can be used as a heat stabilizer to effectively prevent the degradation of PVC during high temperature processing.
2. Antioxidant: In the production of a variety of polymer materials (such as polyolefin, polyester, polyamide), diphenyl isodecyl phosphite is used as an antioxidant to extend the service life of the material.
3. Additives: It is also added to lubricants, coatings and adhesives to improve the thermal stability and oxidation resistance of the product.

Upstream raw materials

the main upstream raw materials for the production of diphenyl isodecyl phosphite include:

1. phosphorous acid (H3PO3) as the main source of phosphorus, phosphorous acid produces phosphate esters by oxidation.
2. Phenol (C6H5OH): Reaction with phosphorous acid by esterification yields diphenylphosphoric acid.
3. Isodecyl alcohol (C10H21OH): Isodecanol is a long-chain alcohol that reacts with phosphoric acid compounds to form the final product through esterification.

These raw materials through a series of chemical reactions and refining process, the final synthesis of diphenyl isodecyl phosphite. In the production process, controlling the reaction conditions and purity is the key to ensure product quality.

Downstream Applications

the downstream applications of diphenyl isodecyl phosphite are mainly concentrated in plastic and rubber products, especially products that require high thermal stability and oxidation resistance. For example:

1. cable and wire insulation materials: As a PVC stabilizer, diphenyl isodecyl phosphite can prevent cables and wires from aging in high temperature environments.
2. Auto Parts: Used to manufacture high temperature and anti-aging automotive interior and exterior parts.
3. Building Materials: It provides excellent thermal stability and oxidation resistance in building materials such as plastic pipes and profiles.

Storage method

diphenyl isodecyl phosphite needs to pay attention to the following points during storage and handling:

1. sealed storage: Because of its volatility and oxidation, it should be stored in a sealed container to avoid long-term contact with air.
2. Keep away from light light will accelerate its degradation, should be stored in a cool, dry, dark environment.
3. Temperature control: The recommended storage temperature is between 15-30°C to avoid high temperature environment.
4. Fireproof and explosion-proof: Keep away from fire and heat sources, avoid contact with strong oxidants, because it is flammable.

market prospect

with the development of industry and technology, the demand of diphenyl isodecyl phosphite is increasing. Especially in the context of increasingly stringent environmental protection and energy-saving requirements, it has broad market prospects as an efficient stabilizer and antioxidant. It is expected that in the next few years, with the continuous development of new materials and new processes, the application field of diphenyl isodecyl phosphite will be further expanded, and the market demand will continue to grow.

Environmental protection and safety

in the use and handling of diphenyl isodecyl phosphite, attention needs to be paid to its impact on the environment and human health. Although it is inherently less toxic, it may release harmful gases at high temperatures or under combustion conditions. Therefore, industrial production and application process should be equipped with the necessary ventilation and protective measures. Waste disposal shall comply with relevant environmental regulations to avoid environmental pollution.

Summary

diphenyl isodecyl phosphite, as an important organophosphorus compound, has a wide range of industrial applications. Its excellent thermal stability and oxidation resistance make it play an important role in the plastics and rubber industries. With the progress of technology and the increase of market demand, the application of diphenyl isodecyl phosphite will be more extensive. In the process of production, storage and use, safety and environmental protection requirements must be strictly observed to ensure its sustainable development.