久久99精品国产99久久6尤,国产成人精品综合网站,18国产精品白浆在线观看免费,久久成人无码视频,日本欧美不卡一区二区三区在线,欧美又黄又粗又爽免费看,欧美视频一区二区,免费人妻精品一区二区三区四区,狠狠色狠狠色综合网,97色伦图片7778久久

  • <strike id="i6ace"><input id="i6ace"></input></strike><fieldset id="i6ace"></fieldset>
  • <ul id="i6ace"><dfn id="i6ace"></dfn></ul>
  • <del id="i6ace"><dfn id="i6ace"></dfn></del>

     

    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----------------------------

    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-4 chemBlink Premium Supplier
    18禁裸乳无遮挡啪啪无码免费| 久久综合网色天天| 久久精品综合视频| 高清无码在线看| 国产精品网址| 亚洲国产欧美国产第一区二区三区| 91精品国自产拍老熟女露脸 | 99久RE热视频这里只有精品6| 国产孕妇av| 极品少妇被啪到呻吟喷水| 人妻夜夜爽天天爽欧美色院| 亚洲欧美综合国产精品二区 | 欧美高清在线视频一区二区| 欧美精品一区二区| 午夜福利AV无码一区二区| 国产69成人精品视频免费| 99噜噜噜在线播放| 久久中文字幕乱码久久午夜 | 亚洲精品无码激情AV| 女性自慰网站免费看WW| 国产免费AV一区二区三区| 久久精品亚洲国产| 亚洲精品无码日韩国产不卡av| 亚洲男人av天堂午夜在| 精品久久久久久综合日本| 中文字幕精品久久久久人妻| 国模无码视频一区| 77777亚洲午夜久久多喷| 男人的天堂无码动漫av| 欧美天天综合色影久久精品| 国产高清无码在线观看| 成人影院一区二区三区| 影音先锋一区二区三区| 小泽玛利亚 一区二区| 免费高清AV一区二区三区| 另类内射国产在线| 四虎影视久久久免费观看| 牛鞭伸入女人下身的真视频| 少妇高潮喷水在线观看| 人妻激情另类乱人伦人妻 | 欧美亚洲一区二区三区|