潘金莲被吸乳揉到高潮的视频,久久99久久99精品免观看,在电影院里拨开内裤挺进,护士交换粗吟配乱大交动态图

China α-pyrrolidone Suppliers, China α-pyrrolidone Manufacturers.

ChemNet  |   Sign in  |   Join Now
Verified
Supplier
19th

year

NEM CHEMICAL CO.,LTD.
http://www.tcbest88.com/ChinaSuppliers/24183/
CN China Suppliers > myj2002 >

α-pyrrolidone

Details for α-pyrrolidone

α-pyrrolidone

Category:

Organic chemicals and Derivatives

α-pyrrolidone
CAS NO:
EC NO:
Molecular Formula:
Molecular Weight:
Specification:
Product description:

I. Application:
This product is an important chemical raw material and organic solvent, and is widely used in medicine, textile, dyestuff and cosmetics industries. It is mainly used to make:
1. medicine (neurokang); 2. nylon-4
3. polyvinyl pyrrolidone (PNVP)
① Medicine ② Dyeing assistants for fabric ③ Beer clarificant ④ Cosmetics (hair jelly)

Molecular Formula:(CH2)CONH
Molecular Weight為:85.10
II. Characteristics:
Colorless and transparent, with a boiling point of 245oC and a melting point of 24.6oC. It is a liquid above 25oC, can be mix dissolved with water, alcohol, ether, chloroform, benzene, acetic acid, ethyl ester and carbon disulfide, and is difficult to dissolve in petroleum ether.

III. Product specifications:

Index

Specification

Purity %

≥99.0

Chroma

≤25

Density g/ml

1.110-1.116

Moisture %

≤0.20

Refractive index

1.480-1.490

Melting point οC

24.6

IV. Packing:
In galvanized iron drums of 200kg in net weight.

if you are sourcing α-pyrrolidone from China ,just feel free to inquire
ChemNet  |   Product  |   Suppliers  |   Buy  |   Sell  |   News  |   REACH  |   Directory  |   CAS  |   Resource
ChemNet is a registered trademark of Zhejiang NetSun Co., Ltd.
主站蜘蛛池模板: 宁津县| 泾阳县| 灌南县| 育儿| 渭南市| 旺苍县| 崇文区| 霍城县| 育儿| 荔波县| 邹城市| 将乐县| 台东市| 雷山县| 青州市| 时尚| 乐昌市| 卓资县| 凯里市| 成武县| 高邑县| 盐源县| 临安市| 亳州市| 剑河县| 琼中| 电白县| 读书| 呼伦贝尔市| 菏泽市| 纳雍县| 邳州市| 东源县| 格尔木市| 济南市| 鹤庆县| 西乌珠穆沁旗| 新晃| 长汀县| 永修县| 山东省|