国产伦精品免编号公布,色综合久久久无码中文字幕波多,久久www成人看片免费不卡,久久午夜无码鲁丝片午夜精品

 

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
乌克兰粉嫩xxx极品hd| 我和亲妺妺乱的性视频| 亚洲伊人久久大香线蕉综合图片 | 无码国产福利av私拍| 亚洲精品无码国产| 欧美va亚洲va在线观看日本| 午夜中文无码无删减| 亚洲色无码中文字幕在线| 精品国产一区二区三区无码 | 国产成人a在线观看视频免费| 116少妇做爰毛片| 人妻精品久久久久中文字幕| 国模雨珍浓密毛大尺度150p| 青娱乐极品视觉盛宴国产视频| 18禁免费无码无遮挡网站| 东京热久久综合久久88| 又色又爽又高潮免费视频观看| 国产综合精品女在线观看| 亚洲精品少妇30p| 欧美va天堂在线电影| 国产精品久久久久无码人妻精品 | 国产日韩一区在线精品| 小雪尝禁果又粗又大的视频| 国自产在线精品一本无码中文| 性一交一乱一色一视频| 久久久亚洲精品一区二区三区浴池| 黑人巨大精品欧美| 永久免费精品精品永久-夜色| 男生白内裤自慰gv白袜男同| 亚洲愉拍二区一区三区| 朝鲜女子内射杂交bbw| 国产成人无码手机在线观看| av无码精品一区二区三区三级| 国产av一二三无码影片| 成人高潮视频在线观看| 一色屋精品视频在线观看| 夜夜爱夜鲁夜鲁很鲁| 久久中文字幕无码a片不卡古代| 狠狠色综合网丁香五月| 四房播色综合久久婷婷| 亚洲精品www久久久久久|