N-Ethyl-2-Pyrrolidone
N-Ethyl-2-Pyrrolidone is an important polar aprotic solvent. At room temperature, it appears as a colorless, transparent liquid with low volatility, high solubility, and excellent chemical stability. The pyrrolidone ring and ethyl group in its molecular structure make it highly polar, capable of dissolving polar substances, while also having some hydrophobic properties that allow it to mix with non-polar components.
This enables it to dissolve a wide range of substances such as resins, polymers, oils, dyes, and active ingredients in pesticides, and it can be mixed in any proportion with water and most organic solvents (such as ethanol, ether, acetone, etc.). This characteristic makes it a key auxiliary material in multiple industrial fields.
Key Technical Parameters
|
Appearance |
Colorless to Slightly yellow liquid |
|
Purity |
99.5% min. |
|
Water |
0.1% max. |
|
g-Butyrolactone |
0.1% max. |
|
Amines |
0.1% max. |
|
Color (APHA) |
50 max. |
In terms of applications, N-Ethyl-2-pyrrolidone is used across several core industries: in the electronics sector, it serves as a crucial component in photoresists and electronic cleaners, used to remove residual impurities and photoresist stripping during semiconductor chip and display manufacturing;
In the chemical and materials sector, it acts as a polymerization reaction solvent, promoting the synthesis and molding of high molecular materials (such as polyimides, polyurethanes), and is often used as a diluent in paints and inks to improve coating uniformity and adhesion; in the pharmaceutical and pesticide sectors, it functions as a solvent or co-solvent for drug active ingredients and pesticide raw materials, enhancing the solubility and stability of active components, thereby aiding in formulation development; additionally, it is used in extraction processes to separate and purify specific substances.
Applications
● Polymers and resin processing
● Industrial electronics
● Paints & coatings
● Pharmaceutical chemicals
Advantages
● Extraordinary solubility
● High chemical stability
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