Agilent Technologies 5975 User Manual

Chemical Ionization Theory A
5975 Series MSD Operation Manual for MassHunter 181
Table 24 Reagent gas proton affinities
Species Proton affinity
kcal/mole
Reactant ion
formed
H
2
100 H
3
+
(m/z 3)
CH
4
127 CH
5
+
(m/z 17)
C
2
H
4
160 C
2
H
5
+
(m/z 29)
H
2
O 165 H
3
O
+
(m/z 19)
H
2
S 170 H
3
S
+
(m/z 35)
CH
3
OH 182 CH
3
OH
2
+
(m/z 33)
t-C
4
H
10
195 t-C
4
H
9
+
(m/z 57)
NH
3
207 NH
4
+
(m/z 18)
Table 25 Proton affinities of selected organic compounds for PCI
Molecule Proton affinity
(kcal/mole)
Molecule Proton affinity
(kcal/mole)
Acetaldehyde 185 Methyl amine 211
Acetic acid 188 Methyl chloride 165
Acetone 202 Methyl cyanide 186
Benzene 178 Methyl sulfide 185
2-Butanol 197 Methyl cyclopropane l80
Cyclopropane 179 Nitroethane 185
Dimethyl ether 190 Nitromethane 180
Ethane 121 n-Propyl acetate 207
Ethyl formate 198 Propylene 179
Formic acid 175 Toluene 187
Hydrobromic acid 140 trans-2-Butene 180
Hydrochloric acid 141 Trifluoroacetic acid 167

Agilent Technologies 5975 Specifications

General

Brand	Agilent Technologies
Model	5975
Category	Laboratory Equipment
Language	English