免费欧美一级_免费观看日本视频_一及黄色大片_精品久久久久久久久久ntr影视_大地资源网高清在线观看免费新浪_久操福利视频

Welcome to the website of Hangzhou Poly.Tech.Co.,Ltd. Hotline: 13685794797

ClassificationProducts

Vinylpyrrolidone

N-Vinylpyrrolidone

Structural formula and physicochemical properties


N-Vinylpyrrolidone

CAS Registration Number: 88-12-0

Molecular weight: 111.1g/mol

Specific gravity @ 20 ℃: 1.043 g/ml

Boiling point: 214 ℃

Melting point: 13.6 ℃

Molecular formula:C6H9NO

Viscosity @20:2.4 mPa.s


Product specifications

Appearance

Colorless or slightly yellow clear liquid

APHA chromaticity

60           (Pt-Co )  

Content

99.5%        (GC)

2-Pyrrolidone

0.1%         ( GC)

Water content

0.2%

Stabilizer

0.1% NaOH or 700 ppmNH3


Description

N-vinylpyrrolidone (NVP) is a colorless or slightly yellow clear liquid. Its homopolymers and copolymers have inherent characteristics such as high polarity, water solubility, chemical stability, low toxicity, and cationic activity, and are therefore widely used in industries such as pharmaceuticals, cosmetics, coatings, inks, adhesives, etc.


Application

Polymer monomers for homopolymers and copolymers of polyvinylpyrrolidone

Reactive diluents for light cured or electron beam cured coatings


Package

200kg plastic drum


Safety

Avoid inhalation and contact with skin and eyes, and wear protective gloves when using.        


Storage and use

N-vinylpyrrolidone (NVP) tends to self polymerize with increasing storage time and temperature. To prevent self polymerization, an appropriate amount of stabilizer is added to the product. The added stabilizer does not affect its polymerization performance, but it should be stored for no more than 90 days in a frozen state and no more than 45 days at 20 ℃; Crystalline products need to be melted with warm water at 30 ℃ during use, and steam heating cannot be used.



Hangzhou Poly.Tech.Co.,Ltd

Domestic business

Contact: Manager Chen

Phone: 13685794797

Email: 1491793720@qq.com

Address: Huali Technology Health and Pharmaceutical Industry Park, Future Science and Technology City, Hangzhou, Zhejiang Province


Mobile browsing and scanning

Hangzhou Poly.Tech.Co.,Ltd., all rights reserved Copyright@2018 Zhejiang ICP No. 18042014-1 All Rights Reserved.

主站蜘蛛池模板: 小俊大肉大捧一进一出好爽 | 女人爽到高潮免费视频大全 | 中文乱码人妻系列一区 | y111111少妇在线光屁股 | 视频二区在线观看 | 日韩视频免费在线观看 | 日韩精品免费观看视频 | 国产av无码专区亚洲av果冻传媒 | 狼色精品人妻在线视频免费 | 无码人妻AV一二区二区三区 | 亚洲日韩在线中文字幕第一页 | 好硬好湿好大再深一点动态图 | 国产精品欧美日韩视频一区 | CHINESE宅妇内射AV | 国产亚洲综合av | 人妻天天爽夜夜爽一区二区 | 天天色综合合 | 国产爱福利 | 国产亚洲精品久久网站 | 日本乱妇乱子视频网站-百度 | 色小妹av | 日本在线看片免费大黄 | 欧美国产日本在线观看 | 永久不封国产毛片AV网煮站 | 久久久久99精品久久久久 | 91久久天天躁狠狠躁夜夜 | 国内精品影视无广告 | 超碰成人在线免费观看 | 国产羞羞的视频在线观看 | 午夜国产精品福利在线观看 | 国产超薄肉丝袜在线 | 女人和拘做受大片免费看 | 国产亚洲精品久久久久久久久久 | 一级片欧美日韩 | 91精品网站 | 超碰色综合 | ts人妖另类精品视频系列 | 无码一区二区三区在线 | 日本一区二区三区国色天香 | 东北成人网站 | 偷偷做久久久久免费网站 |