The difference between diethylene glycol has ether and ether

Diethylene glycol hexyl ether (Diethyl tartrate,DET) and ethyl ether (Diethyl ether,Et2O) are two common organic compounds in the chemical industry. Although they have obvious differences in physical and chemical properties, they are widely used in some applications. This paper will analyze the difference between diethyl ether and diethyl ether in detail from the aspects of basic concepts, physical properties, chemical properties and application fields, so as to help chemical practitioners better understand the characteristics of these two substances and their application scenarios.

1. basic concepts

Diethylene glycol hexyl ether (DET)

Diethyleneglycol hexyl ether is a binary ether formed by linking diethylene glycol (Ethylene glycol,EG) and hexanediol (Hexane-1 glycol, 6-diol,HDA) by an ether bond. Its structural formula is:(CH2CH2OH)2O(CH2)4CH2CH2O(CH2CH2OH)2. Diethylene glycol hexyl ether has a variety of applications in the chemical industry, such as plasticizers, stabilizers and lubricants, and is often used as a solvent and extractant due to its good thermodynamic properties.

Ether (Et2O)

Ether is a colorless, odorless, flammable organic compound with the chemical formula C2H5-O-C2H5. It is widely used in industry and daily life, for example as a solvent, extractant and Coolant. The low boiling point of diethyl ether (about 35°C) gives it an advantage in certain high temperature environments.

2. physical properties comparison

1. Physical state

Diethylene glycol hexyl ether is a liquid at room temperature, but may appear in a solid state at extremely low temperatures. It has a density of about 0.81g/cm³ and a boiling point of about 181°C. Diethylene glycol hexyl ether has high stability, but it may decompose or release diethylene glycol (EG) under certain conditions.

Ether is also liquid at room temperature, with a density of 0.71g/cm³ and a boiling point of 35°C. The smaller molecular weight of ethyl ether makes it more concise in some industrial applications, but its flammability and easy decomposition limit its scope of use.

2. Boiling Point and Volatility

Diethylene glycol has a higher boiling point, suitable for high temperature environment, while the lower boiling point of ether makes it volatile at high temperatures, commonly used in cooling is one of its advantages.

3. chemical properties comparison

1. Reactivity and stability

Diethylene glycol hexylether is relatively stable in most chemical reactions, but under certain conditions (such as high temperature or in the presence of a catalyst), it may decompose and release diethylene glycol (EG). Its low chemical activity makes it have certain advantages in industrial reactions.

Ether is more active, easy to react with acidic, alkaline or oxidant, and easy to decompose at high temperature. Therefore, it is necessary to pay attention to its chemical stability when using ethyl ether to avoid the risk of causing reactions under improper conditions.

| 2. Chemically inert

Diethylene glycol hexyl ether exhibits high chemical inertness in many chemical reactions and is not prone to polymerization, degradation or reaction, so it is used as a solvent and catalyst carrier in many industrial applications. Ether is relatively not chemically inert, easy to participate in a variety of chemical reactions.

4. Application Field Comparison

1. Solvents and Extraction

Ether is often used as an organic solvent and extractant, especially in the oil and gas industry, for the separation and purification of petroleum products. Although diethylene glycol has ether can also be used as a solvent, but its stability is high, suitable for the need for long-term storage of the occasion, and in the extraction process may retain more raw material.

2. Industrial production

In polyester production, diethylene glycol has been used as an auxiliary agent to help improve the efficiency of the polymerization reaction. Ether, on the other hand, is commonly used as a catalyst support for the production of polyesters, but its use is usually low.

3. Environmental protection and safety

Because of its high stability, diethylene glycol has certain advantages in environmental protection, and it is not easy to cause secondary pollution to the environment. Because of its flammability and easy decomposition, ether has great hidden dangers in environmental protection, so it is necessary to strictly control its use in the production process.

5. selection and application recommendations

In practice, the choice of diethylene glycol has ether and ether depends on a number of factors:

1. Environmental requirements: If you need to strictly control the environmental impact, diethylene glycol has ether is a better choice.
2. Process requirements: Some processes that require higher stability are more suitable for the use of diethylene glycol ether.
3. Cost: Ether because of its molecular weight is small, production costs are low, suitable for initial production or large-scale applications.

Diethylene glycol ether and ether have their own characteristics, the user needs to choose according to the specific process needs, environmental requirements and cost budget for comprehensive consideration. By better understanding the differences between these two substances, chemical practitioners can use them more efficiently to support their production processes.