检索结果-南通市图书馆

Analysis and Characterization of isopropyl Carbanilate Herbicide and Its Photoproducts

在线全文

学校读者我要写书评

暂无评论

American Journal of Analytical Chemistry 2011年第7期2卷 809-813页

作者： Mohammed Fehmi Zaater 不详

The phototransformation of the herbicide isopropyl carbanilate (IPC) has been investigated under UV light. Irradiation of the herbicide at room temperature in aqueous and organic solvents such as hexane and methanol afforded new photo-products formed as a consequence of various processes including photo-Fries rearrangement, ring solvolysis, hydrolysis of the amide/carbamoyl and ester bonds, ring coupling and polymerization. The percentage remaining of the herbicide as a function of time was followed periodically starting from zero time up to three hours. Analyses were performed by GC-FID equipped with a semipolar glass column operated at 170?C. The rate of photo disappearance of IPC under controlled lab condition followed 1st order kinetics and found to be solvent dependent in the manner of non polar > polar solvents. The photo-products were successfully separated by GC and preparative TLC (Silica gel F-254) and were identified using either GC-MS and/or MS. Identifications were assigned on the bases of molecular ions, mass fragmentation pattern and whenever possible by comparison with the mass spectra of literature analogues.

关键词： Phototransformation isopropyl carbanilate isopropyl-N-Phenylcarbamate Propham IPC and GC-MS

Jinzhou Petrochemical Develops isopropyl Ether Process

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Chemical Reporter 2008年第29期19卷 19-19页

On September 8th,2008 the new 2 000 t/a isopropyl ether unit of CNPC Jinzhou Petro-chemical Company produced the first batch of qualified *** isopropyl ether project,a major project of the company in its Eleventh Five-year Program period(2006-2010),uses the patent technology developed by the company *** purity of the product is more than 99%,reaching the world’s advanced level.

关键词： qualified CNPC isopropyl itself batch patent reach

THE SYNTHESIS OF 2-FERROCENYL-2-(1-HYDROXYALKYL)-1,3-DITHIANES

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1989年第6期34卷 525-526页

作者：孙利军师树简 Department of Applied Chemistry Beijing Institute of Chemical Technology

There has been now a lot of work done on the 1,3-dithianes chemistry. As a synthetic reagent, 1,3-dithiane has been widely applied to organic syntheses. But no report has been found in literature on the synthesis of derivatives of ferrocene by this versatile method, except that by Reuter et al. In our work a series of new ferrocenyl derivatives, 2-ferrocenyl-2-(1-hydroxyalkyl)-1, 3-dithianes have been synthesized through the following synthetic route:

关键词： reagent versatile alkyl DITHIANES HYDROXYALKYL isopropyl diethyl positions silica instance

Sinopec Developed New Titanium Catalyst for Polyester

在线全文

学校读者我要写书评

暂无评论

China Chemical Reporter 2010年第21期21卷 19-19页

Sinopec Tianjin Petrochemical Company developed an innovative titanium containingcatalyst through reacting isopropyl titanate with other metal compounds. This catalysthas been successfully applied in the company’s ex... 详细信息

关键词： polyester Tianjin titanate isopropyl innovative ti

Improvements to the Fluoride Reactivation Method by Simple Organic Extraction for Retrospective Detection of Exposure to the Organophosphorus Nerve Agents in Human Plasma

在线全文

学校读者我要写书评

暂无评论

International Journal of Analytical Mass Spectrometry and Chromatography 2014年第3期2卷 65-76页

作者： Jin Young Lee Yong Han Lee Agency for Defense Development (ADD) Daejeon Republic of Korea

A rapid and simple organic extraction method for the determination of the chemical warfare agent, isopropyl methylphosphonofluoridate (sarin, GB) in human plasma has been developed using gas chromatography-tandem mass spectrometry (GC-MS/MS). In the course of method development, several organic solvents have been screened and chloroform show a low background and increase signal to noise ratio of GB among other organic solvents. Especially, the organic extraction method of reactivated GB from the human plasma has a 30% greater recovery yield than solid-phase ex-traction (SPE). This simple extraction method was successfully applied to the trace analysis of nerve agents in human plasma in the 3rd Organisation for the Prohibition of Chemical Weapons (OPCW) confidence building exercise on biomedical sample analysis.

关键词： Chemical Warfare Agents isopropyl Methylphosphonofluoridate Organic Extraction Plasma

Jianye Chemical Starts up 30000 T/A Ethylamine Project

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Chemical Reporter 2009年第13期20卷 19-19页

On March 23rd,2009 Jiangsu Taizhou Jianye Chemical Co.,Ltd.a subsidiary of ZhejiangJiande Jianye Organic Chemical Co.,Ltd.,commenced the production of 30 000 t/aethylamine project in Taizhou,Jiangsu *** Jiande Jianye Organic Chemical Co.,Ltd.,located in Jiande of Zhejiang province,is the largest aliphatic amine manufacturer in China and major products in the companyinclude ethylamine,isopropyl amine,n-propyl amine,n-butyl amine,plasticizers,acetatès,

关键词： Jiangsu subsidiary manufacturer isopropyl butyl si

ESR STUDIES ON THE NEGATIVE IONS OF CARBAZOLE AND ITS DERIVATIVES

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1982年第1期27卷 48-51页

作者：徐广智侯贵王竹庭张建中唐有祺 Institute of Chemistry Academia Sinica Graduate School University of Science and Technology of China

Carbazole and its derivatives may react with electron donor or acceptor to form various charge transfer complexes and serve as a new kind of organic semiconductor. The anions or cations of carbazole and its derivative... 详细信息

关键词： polymerization initiating carbazole complexes react donor acceptor isopropyl constants rings

A METHOD FOR SCREENING BIOCIDES BY MIMIC STRUCTURES

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1981年第7期26卷 651-655页

作者：曾昭琪陈子涛 Departments of Biology and Chemistry Nanjing University Departments of Biology and Chemistry Nanjing Universityhe slime which arises from microbes in the systems of recirculating cooling water decreases the transfer rate of heat and increases the corrosion of equipment. Water blooms formed into clogging substances by algae interfere with water supply and produce unpleasant tastes. Some water blooms yielded by blue-green algae synthesize potent nerve toxins that can cause the death of live-stock and wildlife and do harm to fresh water fisheries.

The slime, which arises from microbes in the systems of recirculating cooling water, decreases the transfer rate of heat and increases the corrosion of equipment. Water blooms formed into clogging substances by algae interfere with water supply and produce unpleasant tastes. Some water blooms yielded by blue-green algae synthesize potent nerve toxins that can cause the death of live-stock and wildlife and do harm to fresh water fisheries.

关键词： microbes fresh algae interfere potent stock synthesize dimethylamino analogs isopropyl

STUDIES ON EXTRACT, STRUCTURE AND PROPERTIES OF CEMBRENE

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1987年第3期32卷 162-166页

作者：张致贵刘喜生黄启军孙春亭牛淑云李淑芹王铁钢徐吉庆樊玉国赵成志卢德昆赵淑玲 Department of Chemistry Jilin University Changchun Institute of Theoretical Chemistry Jilin University Dunhua Wood Resin Factory Dunhua Wood Resin Factoryembrene is a 14-membered carbon ring diterpene compound. Most of its derivatives or isomers possess intensive physiological activity. A series of studies on it have been reported at home and abroad. Recently a study on its synthesis has been reported by

Cembrene is a 14-membered carbon ring diterpene compound. Most of its derivatives or isomers possess intensive physiological activity. A series of studies on it have been reported at home and abroad. Recently, a study... 详细信息

关键词： isomers membered physiological bonds isopropyl belongs unsaturated struc ketone insoluble