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[Chemical Knowledge]：The difference between ortho-n-octyl ester and dioctyl ester: know your plasticizer

Read： 657 Time：17months ago Source：Transform the World with Simplicity

Ortho-n-octyl phthalate (DOP) and dioctyl phthalate (DEHP) are two common plasticizers, which are widely used in various fields. However, although their names look similar, they have some differences in chemical structure and application. This article will focus on the differences between these two plasticizers to help readers better understand their characteristics and applications.

the chemical structures of ortho-n-octyl ester and dioctyl ester are different. o-phthalic acid is n-octyl ester is synthesized by the reaction of phthalic acid and n-octanol, the chemical formula is C24H38O4. Dioctyl ester is synthesized by the reaction of phthalic acid and octanol, the chemical formula is C22H42O4. It can be seen that the number of carbons in the molecule of o-dioctyl ester is slightly more than that of dioctyl ester, which means that o-dioctyl ester is more complex in structure. This structural difference may have some impact on their performance and application.

ortho-n-octyl ester and dioctyl ester differ in application. The ortho-octyl ester is usually used as a plasticizer for plastics, which can increase the flexibility and processability of plastics. It is widely used in polyvinyl chloride (PVC) products, rubber products and plastic products. Dioctyl ester is often used as a plasticizer for medical devices such as blood bags and intravenous tubes in the medical field. Because of its good plasticity and high temperature resistance, dioctyl ester has become an important material in the medical field. In addition, dioctyl ester is also used as a plasticizer for coatings, which can increase the gloss and ductility of coatings.

In addition, o-n-octyl ester and dioctyl ester are also different in environmental and health aspects. Because of its long chain chemical structure, the molecule is relatively stable, so it degrades slowly in the environment. The decomposition rate of dioctyl ester in the atmosphere is fast, which can effectively reduce the pollution to the environment. However, dioctyl ester is potentially harmful to health due to toxic substances that may be released during manufacture and use. Therefore, it is necessary to strictly control its exposure during the use of dioctyl ester to reduce the harm to the human body.

In summary, there are some differences between o-n-octyl ester and dioctyl ester in chemical structure, application and environmental health. Understanding these differences can help to better select and use plasticizers. When choosing a plasticizer, the appropriate product should be selected according to the specific application needs and environmental requirements. At the same time, the rational use and proper disposal of chemicals can be sustainable and environmentally friendly.

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