Huangshan Basihui Chemical Auxiliary Co., Ltd.
Search:
亚洲欧美制服在线88p| 三级片黄色视频在线播放| 黄色视频操老师在线观看| 国产无套码AⅤ在线观看| 鸡巴插入女生的穴在线看| 国产在线色咪咪| 无码一区二区三区久久精品| 日韩高清在线一区二区三区| 国产亚州欧美日韩一区二区| 国产自产精品自在线观看| 欧美 日韩 亚洲 字幕| 2019中文字幕在线不卡| 一级免费视频片精品无码| 国产九九九视频在线观看| 国产精品成人国产乱一区| 999久久久久久久久久| 性髙潮久久久久久久久久| 99久久精品免费精品国产| 久久久国产免费A片精品| 久久国产乱子伦精品午夜| 久久99国产综合精品尤物| 最新国产av一区二区三区| 在线观看免费视频无打码| 九九视频这里只有精品98| 免费高清日韩在线观看视频 | 人妻聚色窝窝人体www一区| 国产黄色av一区二区三区| 日韩在线手机看片免费看| 纯爱无遮挡h肉动漫在线播放 | 少妇无码一区二区二三区| 九九精品免费| 露脸国产自产拍在线观看| 男女嗯嗯的视频在线观看| 60岁老年熟妇在线无码| 麻豆E奶女教师国产精品| 一二三四在线观看日本资讯| 日本dvd专区中文在线| 欧美日韩视频在线大尺度| 小泽玛利亚家庭教师在线| 精品色老头老太国产精品| 国产片av在线免费观看|
  Ethers
Alcohols
Acids
Quinones
Carboxylic acid derivat...
Amines
Ketones
Hydrocarbons--alkanes
Hydrocarbons--olefins
Hydrocarbons--Arom...
Heterocyclic compoun...
Nitriles
Aldehydes
Other organic chemical...
 
4 - dimethyl aminopyridine

Product name: 4 - dimethyl aminopyridine gauge: 99.5% package shipment: 25 kg/barrels/water

 

 

 

4 - dimethyl aminopyridine

4-Dimethylaminopyridinee

Don't name:, N - dimethyl - 4 - pyridine amine;Dimethyl aminopyridine;4 - dimethylamino pyridine;4 - dimethyl aminopyridine;4 - dimethyl ammonium arsenic organism;4 - dimethyl aminopyridine/DMAP;P - dimethyl aminopyridine;4 - dimethyl 4 - aminopyridine DIMETHYLAMINOPYRIDINE

CAS no. : 1122-58-3 】 

Molecular formula: C7H10N2

Molecular weight: 122.17

Risk categories: 8

 

Basic properties:

Appearance characteristics

A white crystalline powder

Melting point

83-86 °C(lit.)

Boiling point

211 °C

Dense degree of

 

The refractive index

n20/D 1.431

Flash point

110 °C

With the way

Widely used in chemical synthesis catalyst in organic drug synthesis, pesticides, dyes, food additives, such as synthesis of acylation, hydroformylation, etherification, esterification, etc.4 - dimethyl aminopyridine is widely used in chemical synthesis in recent years a new type of high efficient catalyst, dimethyl amine and its structure for electronic mother ring resonance (pyridine ring), can strongly activated nucleophilic ring of nitrogen atoms to replace, significantly high resistance, low reactivity of alcohol and amine acylation (phosphorus acylation, sulfonyl, carbonyl) reaction, the activity is about 104-6 times of pyridine.In organic synthesis, drug synthesis, pesticide, medicine, dyes, spices, acylation of polymer chemistry, analytical chemistry, alkylation, etherification, esterification and ester exchange, and other types of reactions have higher catalytic ability, to improve the yield is extremely obvious

 
[ Back ]
 
Home | About us | Products | News | Honors | Facility | Order | Contact us | 中文版 【 Admin
Copyright(C)2014, Huangshan Basihui Chemical Auxiliary Co., Ltd. All Rights Reserved Copyright Notice