久久小说免费下载,国产精品久久久久电影院,国产精品久久久久精品综合紧,JULIA无码人妻中文字幕在线

Welcome to Shanghai Yixiang Chemical Co., Ltd technology website, 0086-532-66721921

SERVICE HOTLINE:

0086-532-66721921

Shanghai Yixiang Chemical Co., Ltd

QQ:3572534783

Tel:0086-532-66721921

E-mail:market@yx-pvp.com

Add:Room J3681, No. 500, Xincheng Road,

Jiading District, Shanghai,China

Solvent Properties and Applications of 2-Pyrrolidone

Release Date:2022-11-01

2-Pyrrolidone

2-pyrrolidinone, English name 2-pyrrolidinone, CAS No. 616-45-5, is colorless to yellowish liquid or crystal.

2-pyrrolidone forms metal salts with alkali metals, alkoxy metals or alkaline hydroxides. It can be hydrolyzed to 4-aminobutyric acid in the presence of strong acid. It reacts with acetic anhydride to form N-acetylpyrrolidone. N-hydroxymethyl-2-pyrrolidone was obtained by reacting with paraformaldehyde under the catalysis of alkali.

In terms of solubility, 2-pyrrolidone can be mixed with water, alcohol and ether. Most of the light damages, such as benzene, ethyl acetate and carbon disulfide, are miscible and difficult to dissolve in petroleum ether.

2-pyrrolidone is used as a solvent for synthetic resin, plasticizer, polymerization agent, printing ink, insecticide, pesticide, polyol, iodine, etc. It is also an organic synthesis intermediate, which is used as a raw material for the manufacture of nylon 4, polyvinylpyrrolidone, nylon 4 and piracetam.


Online Service
Contact us

Hot Tel

0086-532-66721921

Work Shift

from Monday to Friday

QR code
Service
日本熟妇人妻中出| 国产午夜无码福利在线看网站| 久久久久久久性潮| 亚洲av无码av日韩av网站| 亚洲 日韩 欧美 成人 在线观看| 999久久久免费精品国产| 无码熟妇αⅴ人妻又粗又大| 未满十八勿入av网免费| 国产麻豆成人传媒免费观看| 国产a国产片国产| 国产三级a三级三级| 97久久综合亚洲色hezyo| 国产精品久久精品第一页| 性色欲网站人妻丰满中文久久不卡| 中文字幕久久久久人妻| 无码av免费精品一区二区三区| 无码人妻丰满熟妇区毛片18| 久久亚洲精品情侣| 美女视频黄是免费| 国产乱人伦偷精品视频免下载| 国产欧美一区二区三区在线看| 国产欧美一区二区三区在线看| 精品无码国产污污污免费网站| 亚洲精品乱码久久久久久自慰| 男女真人后进式猛烈动态图 | 国产成人精品a视频| 色悠久久久久综合欧美99| 色国产精品一区在线观看| 国产成a人亚洲精品无码樱花| 国产成人综合亚洲看片| 国产手机在线αⅴ片无码观看| 亚洲国产婷婷香蕉久久久久久| 99久热re在线精品99 6热视频| 日日做夜狠狠爱欧美黑人| 亚洲aⅴ无码专区在线观看q| 一二三四在线视频观看社区| 精品日韩欧美一区二区在线播放| 中文幕无线码中文字夫妻| 四虎影院海外永久| 99久久精品国产一区二区蜜芽 | 免费视频成人片在线观看|