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zutropfen
add dropwise
Last Update: 2014-11-14 Usage Frequency: 5 Quality: Reference: IATE
nach dem zutropfen wird noch 30 min. weitergerührt.
after the dropwise addition, stirring is continued for a further 30 min. this gives a clear reaction product with a slight yellow tint.
Last Update: 2014-12-03 Usage Frequency: 2 Quality: Reference: IATE
anschließend 20 ml 5 %-ige natronlauge zutropfen.
subsequently, add 20 ml of 5% strength sodium hydroxide solution dropwise.
es wurde durch zutropfen von 350 ml methanol gefällt.
it was precipitated by dropwise addition of 350 ml of methanol.
bei 55°c lässt man in 20 minuten 18,5 g epichlorhydrin zutropfen.
then 18.5 g of epichlorohydrin are added dropwise at 55 reaction temperature is then raised to 75 mixture is stirred for 2 hours.
Last Update: 2014-12-03 Usage Frequency: 4 Quality: Reference: IATE
nach beendetem zutropfen war der test auf h o (iodstärkepapier) schwach positiv.
on completion of the dropwise addition, the test for h o (starch iodide paper) was weakly positive.
ph 2,2 wird hierbei durch zutropfen einer 32 %igen natronlauge konstant gehalten.
during this addition, the ph is kept constant at 2.2 by dropwise addition of 32% sodium hydroxide solution.
Last Update: 2014-12-03 Usage Frequency: 7 Quality: Reference: IATE
drei stunden nach zutropfen betrug der nco-gehalt 4,70% (th.: 4,90 %).
three hours after dropwise addition, the nco content was 5.03% (theoretical: 5.04%).
