[Chemical Knowledge]：The nature, use, upstream and downstream raw materials, storage methods of dioctyl, what is the role of dioctyl

Properties of dioctyl

Two octyl (Dioctyl phthalate, DOP), the chemical formula is C24H38O4, is an important product of phthalate esters. Its appearance is a colorless and transparent oily liquid with good chemical stability and low volatility. It is insoluble in water at room temperature, but soluble in most organic solvents such as ethanol, ether, benzene, etc. Dioctyl has excellent cold resistance, light resistance and electrical insulation, and its toxicity is low, so it is widely used in various applications.

Two octyl use

Two octyl grease is mainly used as a plasticizer, widely used in plastics, rubber, coatings and other industries. As a plasticizer, dioctyl can give the material flexibility, improve its plasticity and processing properties. In PVC (polyvinyl chloride) materials, dioctyl is one of the most commonly used plasticizers, accounting for more than 50% of the total plasticizer. Two octyl is also used in the production of artificial leather, film, cable materials, hoses, insulation materials, etc., to enhance its softness and ductility. Two octyl grease is also widely used in the manufacture of agricultural films, transparent films and toys.

Two octyl upstream and downstream raw materials

The production of dioctyl mainly depends on two upstream raw materials: phthalic anhydride and n-octanol. Phthalic anhydride is obtained by oxidation of o-xylene, while n-octanol can be synthesized by ethylene obtained from petroleum cracking. In the production process, phthalic anhydride and n-octanol are first esterified under the action of a catalyst to generate dioctyl and water. This process requires control of the reaction temperature and reaction time to ensure high purity and high yield of the dioctyl product.

In terms of downstream applications, dioctyl as an important plasticizer is widely used in PVC plastic products, cable materials, rubber products and other fields. Changes in downstream demand directly affect the market price and supply of upstream raw materials. Therefore, the production and market fluctuations of Erxingzhi are closely related to the prosperity of the petrochemical industry and the plastic products industry.

Two octyl fat storage method

Two octyl fat should be stored in a cool, dry, well-ventilated warehouse, avoid direct sunlight and high temperature environment. Storage containers shall be of closed, corrosion-resistant material such as steel or fiberglass tanks. Two octyl grease has a certain degree of hygroscopicity, so pay attention to moisture-proof during storage and avoid contact with moisture. The storage area should be far away from fire source, heat source and oxidant to prevent decomposition reaction caused by high temperature or contact with oxidant to ensure safety. Operators should wear protective equipment to avoid skin and eye contact when carrying out loading, unloading, transfer and other operations.

Market Analysis

In recent years, the market demand of Erxingzhi has risen steadily, which is mainly due to the growth of downstream industries such as construction, automobile, cable and home furnishing. With the acceleration of urbanization and the improvement of people's living standards, PVC products are increasingly widely used in daily life, which promotes the demand for two octyl. The continuous introduction of environmental regulations and the research and development of green plasticizers have also had an impact on the second octane market. At present, the world's major producers are concentrated in China, the United States, Europe and other places. As the world's largest production and consumption market of Erxingzhi, China has a broad market prospect.

Environmental and health effects

Although dioctyl ester occupies an important position in the plasticizer market, its environmental and health effects have also attracted widespread attention. Phthalate plasticizers, including dioctyl, are considered to be potentially environmentally persistent and bioaccumulative and may pose a hazard to ecosystems and human health. In order to reduce these effects, countries have issued relevant laws and regulations to restrict or prohibit the use of phthalate plasticizers in some products. In this regard, researchers are also actively developing and promoting non-toxic, environmentally friendly new plasticizers to replace traditional phthalate products.

Conclusion

As an important chemical product, dioctyl ester has good physical and chemical properties and broad application prospects. Its production relies on the upstream supply of phthalic anhydride and n-octanol, while market demand is influenced by downstream PVC products and related industries. Despite the environmental and health challenges of dioctyl, its position in the field of plastic plasticizers remains solid. In the future, with the advancement of technology and the improvement of environmental awareness, the research and application of Erxingzhi and its substitutes will continue to develop, and promote the green transformation and sustainable development of the chemical industry.