HH-WAX 毛細(xì)管柱測定N-乙基吡咯烷酮

、涂料和耐熱樹脂等。


浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司  ，研發(fā)HH-WAX毛細(xì)管柱測定N-乙基吡咯烷酮，面積歸一法定量，結(jié)果準(zhǔn)確。


Determination of N-Ethylpyrrolidone by Capillary Column
Capillary Column Determination of N-Ethylpyrrolidone Details:

Name: capillary column

Fixative: polyethylene glycol-20M

Specifications: 30m*0.32mm*0.5um

Model: HH-WAX

N-Ethylpyrrolidone (NEP) is a colorless and transparent liquid with a boiling point of 82-83°C ( 101.3Kpa), a relative density of 0.994g/cm3 and a refractive index of 1.4665 ( 22°C). It is a strong polar organic solvent. It has high chemical stability, weak alkalinity, excellent solubility, low vapor pressure and low dielectric constant. It does not form hydrogen bonds and is a polar aprotic solvent. It can replace other solvents with poor stability, high vapor pressure and high toxicity and can easily penetrate into the skin. It is called a non-toxic supersolvent.

The methods for synthesizing N-ethylpyrrolidone include pyrrolidone method and γ-butyrolactone method. The pyrrolidone method requires halogenated hydrocarbons to participate in the reaction and produces corresponding halides, and the selection of halides for the reaction kettle is also relatively high. γ-Butyrolactone method, N-alkyl-2-pyrrolidone is prepared by condensation of primary amine and γ-butyrolactone. The yield of this method is relatively high, but the process conditions are stricter.

It can be used as a high-efficiency selective solvent, catalyst and cationic surfactant, and can also be used as a basic raw material to produce pharmaceutical intermediates. It can be used for refined oil products and the production of gunpowder, medicine, dyes, pesticides, daily chemicals, coatings and heat-resistant resins.


Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. keeps pace with the times and develops the HH-WAX capillary column for the determination of N-ethylpyrrolidone, which is quantified by the area normalization method, and the results are accurate and reliable.