香蕉视频一区_东京热一本无码AV_野花视频最新免费高清完整在线观看_丁香五月婷婷激情四射五月激情_亚洲男人天堂_欧美日韩亚洲一区AI换脸_亚洲中文字幕在线网_正在播放首页国产精品_思思精品视频_国产日韩精品中文字幕

1. Chemical name: 2-Pyrrolidone;Butyrolactam;Alpha-P; A close relative-pyrrolidone;α-PVR; 2-P
2, CAS: 616-45-5

3. Molecular formula: C₄H₇NO

4. Molecular weight: 85.10

5. Structural formula:

6. Melting point: 24.6°C

7. Flash point: 129°C

8. Boiling point: 245°C

 

Colorless to light yellow liquid or crystals. Can miscible with water; alcohol; ether; chloroform; benzene;Ethyl acetate ; carbon disulfide and insoluble in petroleum ether. High boiling point polar solvent, is also intermediate in organic synthesis. Mainly used for synthetic resins, pesticides, polyols, inks, solvents of sulfonation, as well as raw materials for the production of polyethylene pyrrolidone, polyvinyl-4 and piracetam, etc.

 

Item	First grade	Top grade
Purity, %       ≥	99	99.5
Moisture, %¡¡    ≤	0.1
Chroma (Pt-Co)#≤	20	10
Density£¨20¡æ£©, g/cm3	1.107~1.115

Packaging:200KG in Galvanized drum

  Previous product£º N-methyl pyrrolidone(NMP)