无码毛片aaa在线,久久国产午夜精品理论片34页,国产毛片精品av一区二区,超碰国产天天做天天爽

 

Tetraethylammonium bromide

Update time:2021/11/05 13:47:11  ???View:  
Tetraethylammonium bromide is an organic substance with the chemical formula (C2H5)4NBr, white crystals. Easy to absorb moisture. Easily soluble in water, ethanol, chloroform and acetone, slightly soluble in benzene, solubility in water: 2795 g/L (25°C). It is irritating.
Used as a reagent for polarographic analysis reagents and pesticide intermediates
Chinese name: 四乙基溴化銨
Foreign name Tetraethylammonium bromide
Don't  Name: Tetraethylammonium bromide, tetraethylammonium bromide
Chemical formula (C2H5)4NBr  Molecular weight 210.155  CAS accession number 71-91-0
Melting point: 285 ℃, water soluble and easy to dissolve, density 1.397 g/cm3. Appearance: white crystal
Character description

White crystals. Easy to absorb moisture. Easily soluble in water, ethanol, chloroform and acetone, slightly soluble in benzene, water solubility: 2795 g/L (25°C). The pH of the 10% aqueous solution is 6.5, and the pH does not change when heated to 95°C for 28 hours. It is irritating.
Purpose
For ion pair chromatography. Test gold, iridium, osmium, palladium, rhodium and ruthenium. Polarographic analysis. Used as a phase transfer catalyst in organic synthesis.
Storage and transportation are easy to absorb moisture, sealed and kept dry.
------分隔線(xiàn)----------------------------

Service Hotline:

You only need a phone call, we will serve you attentively

Consult now
Copyright © Shandong Zhengji Chemical Co., Ltd.  All Rights Reserved   Case Number :魯ICP備20007847號(hào)-4 chemBlink Premium Supplier
中国熟妇牲交视频| 成人午夜精品久久久久久久 | 亚洲精品国产suv一区88| 狠狠cao2020高清视频| 久久久久久人妻无码| 日本无遮挡真人祼交视频| 97夜夜澡人人爽人人模人人喊| 国产精品高潮呻吟av久久小说| 影音先锋日日狠狠久久| 超级碰97直线国产免费公开| 天堂v亚洲国产v第一次| 日本亚洲中文字幕不卡| 欧美激情a∨在线视频播放| 国产精品日韩专区第一页| 强开小婷嫩苞又嫩又紧视频| 无码一区二区三区老色鬼 | 99在线精品国自产拍中文字幕| 国产亚洲日韩在线a不卡 | 亚洲人成电影网站 久久影视| 免费看撕开奶罩揉吮奶头视频| 黑人上司粗大拔不出来电影| 久久国产乱子伦精品免费女人| 欧美成人精精品一区二区三区| 亚州av综合色区无码一区| 国产精品盗摄!偷窥盗摄| 亚洲国产一成人久久精品| 亚洲中文久久精品无码1| 久久精品国产一区二区三| 出租屋勾搭老熟妇啪啪| 久久久久高潮综合影院| 免费无码午夜理论电影| 国产美女亚洲精品久久久| 直接观看黄网站免费视频| 亚洲日韩精品无码专区| 国内精品久久人妻无码不卡| 国产成人亚洲精品另类动态图| 久久久精品一区aaa片| 精品久久久久久国产| 亚洲精品无码久久不卡| 国产av一区二区三区人妻| 制服丝袜另类专区制服|