Tables for Chemistry
Fawcett Acidity and Basicity
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Fawcett Acidity and Basicity
Solvent properties
Chromatography
Eluotrope - Trappe
Eluotrope - Strain
Eluotrope - Snyder
Eluotrope - Neher/Arx
Solvent classes
Polarity Scales
E
T
AN and DN
A
p
and B
p
ε
r
and n
D
δ
d
, δ
p
, δ
h
SPP, SB and SA
Spot tests
Sulphuric acid
Iodine
Permanganate
Silver stain
TTC
Acid/Base
Chlorine
1-Naphthylamine
Diethyl malonate
The acidity (A
p
) and basicity (B
p
) values of Fawcett are obtained from the solvation energy of monoatomic ions interpreted using the
mean spherical approximation
.
See Blum and Fawcett;
J.Phys.Chem.
96
(1992) 408.
Fawcett's A
p
and B
p
values
Name
CAS nr
A
p
B
p
2-propanone
67-64-1
22
12.55
4-methyl-2-oxo-1,3-dioxolane
108-32-7
23.9
11.4
acetonitrile
75-05-8
24.4
11.47
benzonitrile
100-47-0
23.3
11.2
butanol
71-36-3
34.5
11.3
dimethyl sulfoxide
67-68-5
25.6
13.3
ethanol
64-17-5
37.2
11.9
formamide
75-12-7
34.1
12.5
hexamethylphosphoramide
680-31-9
19.2
13.8
methanol
67-56-1
41
12.1
N,N-dimethylacetamide
127-19-5
20.1
13.5
N,N-dimethylformamide
68-12-2
22.2
13.2
N-methylformamide
123-39-7
31.5
12.6
N-methylpyrrolidone
872-50-4
22.1
14
nitrobenzene
98-95-3
26.4
10.6
nitromethane
75-52-5
25.5
10.7
propanol
71-23-8
34.7
12.05
sulfolane
126-33-0
22
12.5
water
7732-18-5
48
12.1