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[Chemical Knowledge]：The difference between ethylene glycol and propylene glycol methyl ether

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Ethylene glycol and propylene glycol methyl ether are common chemicals in the chemical industry, and they have different uses and characteristics in the production process. Let's take a look at the basic properties of ethylene glycol and propylene glycol methyl ether. Ethylene glycol, chemical formula C2H6O2, also known as ethylene glycol, glycol ether, etc., is an important organic compound, commonly used as a solvent, reaction intermediate and antifreeze. Propylene glycol methyl ether, the chemical formula is C4H10O2, is a strong solvent and volatile organic compounds, mainly used in coatings, inks, adhesives and other fields. Ethylene glycol and propylene glycol methyl ether have a wide range of applications in the chemical industry, but there are also some obvious differences between them. Ethylene glycol is mainly used as a solvent and a reaction intermediate. It is less volatile and has a higher volatile sublimation temperature, which can work effectively at higher temperatures. Propylene glycol methyl ether is highly volatile and is often used as a solvent in the field of coatings, which can quickly volatilize and dry. In addition, the safety of ethylene glycol and propylene glycol methyl ether in the production process is also different. Ethylene glycol has high safety during processing, is easy to control, and is not easy to cause fire and explosion. Propylene glycol methyl ether is flammable and explosive under high temperature, high pressure or oxygen conditions, and the production environment and operation mode need to be strictly controlled. In addition, ethylene glycol and propylene glycol methyl ether also have different performance in environmental protection. The biodegradation rate of ethylene glycol in the environment is fast and has little impact on the environment, while the degradation rate of propylene glycol methyl ether in water is slow, which may cause some pollution to the water body. In summary, ethylene glycol and propylene glycol methyl ether have different applications and characteristics in the chemical industry, and the selection of appropriate chemicals has an important impact on the production process and product quality. When using ethylene glycol and propylene glycol methyl ether, it must be selected according to specific production needs and environmental requirements to ensure production safety and product quality.

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