Solvent classification acc. to Snyder
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Eluotrope series
Common laboratory solvents can be placed in groups with similar chromatographic properties. The classification below is due to Snyder.
L.R. Snyder,
J. Chromatogr. Sci.
16
(1978) 223.
Solvent groups (Solvent strength ε
0
in parenthesis)
Group 0
cyclohexane
cyclopentane
pentane
hexane
heptane
isooctane
1,1,2-trichlorotrifluoroethane
Group 1
diethyl ether
methyl t-butyl ether
diisopropyl ether
dibutyl ether
tetramethylguanidine
Group 2
methanol
ethanol
n-propanol
isopropanol
n-butanol
isobutanol
tert-butanol
isopentanol
octanol
Group 3
N,N-dimethylacetamide
N,N-dimethylformamide
N-methylpyrrolidone
pyridine
dimethyl sulfoxide
2-methoxyethanol
tetrahydrofuran
Group 4
acetic acid
formamide
benzyl alcohol
Group 5
n-butyl chloride
dichloromethane
ethylene chloride
tricresyl phosphate
Group 6
acetone
acetonitrile
ethyl acetate
butyl acetate
1,4-dioxane
glyme
methyl ethyl ketone
methyl isoamyl ketone
methyl isobutyl ketone
methyl n-propyl ketone
propylene carbonate
aniline
nitromethane
Group 7
benzene
toluene
o-xylene
nitrobenzene
chlorobenzene
1,2-dichlorobenzene
1,2,4-trichlorobenzene
diphenyl ether
Group 8
m-cresol
chloroform
dodecafluoroheptane
water
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