黄色网址在线观看,国产乱老熟视频乱老熟女9,高清不卡毛片,播放一级毛片真人

      1. N-Ethyl-2- pyrrolidone(NEP)


        Chemical Name:
        N-Ethyl-2-Pyrrolidone(NEP)
                                        1-Ethyl-2-Pyrrolidone(NEP)
        CAS NO.: 2687-91-4

        Structural formula:


        Formula:C6H11NO           Molecular Weight:99.134    
        Boiling Point: 202℃             Flash Point: 95℃              


        N-Ethyl-2-Pyrrolidone is a colorless to slightly yellow liquid, with a faint amine odor. NEP is a strong polar organic solvent with high chemical stability, weak alkalinity, high solubility, low stream pressure and low dielectric constant and other properties. It can be used as highly selective solvent, catalyst and cationic surfactant.

        (In house Standard:Q/PGM001---2021) 

                  Grade / Specification

        Electronicgrade

        Industrialgrade
        Purity(GC,wt%) ≥99.8 ≥99.50
        Moisture(K.F,wt%) ≤0.05 ≤0.1
        Color(Hazen) ≤20 ≤50
        Density(D420g/ml)

        0.990-0.999

        0.990-0.999
        PH value 10% 6-10 6-10
        Amine amount(ppm) ≤ 30

        ≤50

        Used in the production of pyrrolidone series products,  pharmaceutical intermediates, pesticide intermediates and daily-use cosmetics、lithium batteries and etc.





          Previous product: N-Methyl-2- pyrrolidone(NMP)
          Next product: None
         
        點擊這里給我發(fā)消息
         
         
         
         
         
        點擊這里給我發(fā)消息