Chemical Abstract Service Registry Numbers (CASRNs) for cations

by Axel Drefahl • www.axeleratio.com

The following table lists selected cations alphabetically by cation name along with the ionic formula and CASRN.
The CASRN is useful in locating cations in the ILThermo database where information on ionic liquids and their cations and anions can be found. Further, ion CASRNs can be used to identify cation-anion compounds (salts including ionic liquids) in the Chemical Property Viewer (CPV) that interfaces the ThermoML Archive and other chemical property data collections.
Cation name Formula CASRN
1,1-dimethylpyrrolidinium [C6H14N]+ 15312-12-6
1,2-dimethyl-3-propylimidazolium [C8H15N2]+ 157310-70-8
1,3-dimethylimidazolium [C5H9N2]+ 45470-32-4
1-butyl-1-methylpyrrolidinium [C9H20N]+ 223437-10-3
1-butyl-2,3-dimethylimidazolium [C9H17N2]+ 108203-89-0
1-butyl-3-methylimidazolium [C8H15N2]+ 80432-08-2
1-butyl-3-methylpyridinium [C10H16N]+ 999000-53-2
1-butyl-4-methylpyridinium [C10H16N]+ 343952-32-9
1-butylpyridinium [C9H14N]+ 45806-95-9
1-decyl-3-methylimidazolium [C14H27N2]+ 81994-88-9
1-dodecyl-3-methylimidazolium [C16H31N2]+ 46928-10-3
1-ethyl-1-methylpyrrolidinium [C7H16N]+ 15302-90-6
1-ethyl-2,3-dimethylimidazolium [C7H13N2]+ 131097-15-9
1-ethyl-3-methylimidazolium [C6H11N2]+ 65039-03-4
1-ethyl-3-methylpyridinium [C8H12N]+ 38675-08-0
1-ethylpyridinium [C7H10N]+ 15302-96-2
1-heptyl-3-methylimidazolium [C11H21N2]+ 81994-86-7
1-hexyl-2,3-dimethylimidazolium [C11H21N2]+ 384347-20-0
1-hexyl-3-methylimidazolium [C10H19N2]+ 85100-82-9
1-hexyl-3-methylpyridinium [C12H20N]+ 999000-73-6
1-methyl-1-propylpyrrolidinium [C8H18N]+ 108259-90-1
1-methyl-3-octylimidazolium [C12H23N2]+ 178631-03-3
N,N,N-trimethyl-1-heptanaminium [C10H24N]+ 17077-60-0
N,N,N-trimethyl-1-hexanaminium [C9H22N]+ 16208-27-8
N,N,N-trimethyl-1-octanaminium [C11H26N]+ 15461-38-8
N,N-diethyl-N-(1-methylethyl)-2-propanaminium [C10H24N]+ 54907-70-9
pyridinium [C5H6N]+ 16969-45-2
tetrabutylammonium [C16H36N]+ 10549-76-5
tetraethylammonium [C8H20N]+ 66-40-0
tetrapropylammonium [C12H28N]+ 13010-31-6
tributylmethylammonium [C13H30N]+ 29814-63-9
tributyloctylammonium [C20H44N]+ 58175-99-8
triethylheptylammonium [C13H30N]+ 45116-17-4
triethylhexylammonium [C12H28N]+ 23079-35-8
triethyloctylammonium [C14H32N]+ 23079-36-9
trihexyl(tetradecyl)phosphonium [C32H68P]+ 374683-43-9
triisobutylmethylphosphonium [C13H30P]+ 344774-04-5

Hint
An analogous table for anions is available:
CASRNs for anions


Last update was made on March 2 in 2008 by Axel Drefahl
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