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dietileter
diethyl ether
Última actualización: 2017-04-06
Frecuencia de uso: 25
Calidad:
nitrobenzen ali dietileter (predvsem nitrobenzen) preprečuje reakcijo med srebrovim kloridom in ioni tiocianata.
nitrobenzene or diethyl ether (but above all nitrobenzene) prevents the silver chloride from reacting with thiocyanate ions.
dietileter lahko ohranjamo prostega peroksidov, tako da dodamo mokro cinkovo folijo, ki jo popolnoma namočimo eno minuto v razredčeno kislo raztopino bakrovega sulfata ter nato speremo z vodo.
diethyl ether may be maintained free from peroxides by adding wet zinc foil that has been completely immersed in dilute acidified copper sulphate solution for one minute and subsequently washed with water.
dietileter, brez peroksidov, ki ne vsebuje več kot 2 mg antioksidantov/kg in ustreza zahtevam slepega preskusa (6.3).
diethylether, free from peroxides not containing more than 2 mg/kg of antioxidants, and meeting the requirements of the blank test (6.3.).
standardna kromatografska raztopina sitosterola: 1 ml standardne raztopine sitosterola (4.8.1) prenesite v vsako od dveh reakcijskih stekleničk (3.7) in odstranite dietileter s tokom dušika.
sitosterol standard chromatographic solution: transfer 1 ml of sitosterol standard solution (4.8.1) to each of two reaction vials (3.7) and remove the diethyl ether with a stream of nitrogen.