Search results
Results from the WOW.Com Content Network
N,N-Diisopropylethylamine, or Hünig's base, is an organic compound that is a tertiary amine. It is named after the German chemist Siegfried Hünig [ de ] . It is used in organic chemistry as a non-nucleophilic base .
It is also used to prepare N,N-diisopropylethylamine (Hünig's base) by alkylation with diethyl sulfate. [ 8 ] The bromide salt of diisopropylamine, diisopropylammonium bromide, is a room-temperature organic ferroelectric material.
A variety of amines and nitrogen heterocycles are useful bases of moderate strength (pK a of conjugate acid around 10-13) . N,N-Diisopropylethylamine (DIPEA, also called Hünig's Base [1]), pK a = 10.75
This page was last edited on 26 May 2006, at 03:19 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
This page was last edited on 17 January 2025, at 01:53 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
In the 1980s, the European Union began harmonising regulatory requirements. In 1989, Europe, Japan, and the United States began creating plans for harmonisation. The International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH) was created in April 1990 at a meeting in Brussels.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more
In 1998, directive 80/1107/EEC was repealed and replaced by a new regime under the chemical agents directive (directive 98/24/EC). The directive defines occupational exposure limit value as "the limit of the time-weighted average of the concentration of a chemical agent in the air within the breathing zone of a worker over a specified reference ...