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 is a list of limits for common functions such as elementary functions. In this article, the terms a, b and c are constants with respect to x.
In 1998, directive 80/1107/EEC was repealed and replaced by a new regime under the chemical agents directive (directive 98/24/EC).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 ...
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 ...
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.
Inhalation and skin contact are expected to be the primary ways of occupational exposure to this chemical. Based on single exposure animal tests, it is considered to be slightly toxic if swallowed or inhaled, moderately toxic if absorbed through skin as well as being corrosive to eyes and skin. [1]