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Porapak™ Series Retention Times Table (Unit: min.)

Porapak™ Series is registered trademarks of Waters Corporation.

Analytical Conditions: Stainless steel column 80/100 mesh 1 m × 2.3 mm I.D. 30 ºC He 25 mL/min TCD

Compounds
P
Q
R
S
N
T
Oxygen
0.23
0.24
0.24
0.24
0.24
0.24
Nitrogen
0.23
0.24
0.24
0.24
0.24
0.24
Argon
0.23
0.24
0.24
0.24
0.24
0.24
Carbonmonooxide
0.23
0.24
0.27
0.24
0.24
0.24
Carbon dioxide
0.36
0.65
0.60
0.66
0.90
1.26
Carbonyl sulfide
1.15
3.33
2.83
3.47
4.05
4.71
Sulfur dioxide
2.52
5.87
10.84
23.80
16.50
22.48
Nitric oxide (NO)
0.27
0.30
0.28
0.26
0.28
0.28
Nitrous oxide (N2O)
0.42
0.76
0.66
0.81
0.94
1.22
Methane
0.26
0.35
0.32
0.38
0.35
0.39
Ethylene
0.45
1.15
0.90
1.01
1.22
1.32
Acethylene
0.53
1.15
1.16
1.20
2.00
2.96
Ethane
0.54
1.60
1.16
1.36
1.50
1.54
Propylene
1.40
6.44
4.43
5.39
7.14
7.28
Propane
1.40
7.24
5.00
5.98
7.14
7.28
Ammonia
0.65
1.52
1.88
1.77
1.89
2.72
Ethylene oxide
4.45
12.70
12.51
14.82
24.78
34.05
Difluoroethane
1.16
3.90
3.97
4.63
9.00
11.92
Chlorodifluoromethane（Freon 22）
1.22
4.32
5.61
5.60
10.99
13.88
Methyl chloride
2.10
6.16
5.74
7.00
9.76
11.92
Dichlorodifluoromethane（Freon 12）
1.43
7.43
5.73
7.13
9.78
10.28
Chlorodifluoroethane
2.04
15.44
11.71
13.73
-
-
Dichlorotetrafluoroethane
10.40
25.75
19.51
20.32
-
-

Analytical Conditions : Stainless steel column 80/100 mesh 1 m × 2.3 mm I.D. 175 ºC N2 25 mL/min FID(*：He flow TCD) Group Compounds P Q R S N T

Group
Compounds
P
Q
R
S
N
T
Acids
Acetic acid
0.39
1.08
2.14
3.68
4.18
5.21
Propionic acid
0.65
2.42
4.75
9.05
9.11
10.68
iso-Butyric acid
0.91
4.43
8.28
16.41
16.32
18.13
Butyric acid
1.05
5.22
9.87
19.71
19.80
22.30
iso-Valeric acid
1.52
9.69
16.85
36.81
36.79
39.50
Valeric acid
1.89
12.12
21.70
45.70
45.30
48.90
Alcohols
Methanol
0.24
0.35
0.39
0.48
0.61
0.69
Ethanol
0.30
0.60
0.63
0.76
1.21
1.20
iso-Propanol
0.37
0.91
0.89
1.03
1.79
1.90
tert-Butanol
0.38
1.40
1.35
1.69
2.56
2.67
n-Propanol
0.43
1.22
1.24
1.53
2.52
2.60
sec-Butanol
0.50
1.93
1.85
2.40
3.69
3.81
iso-Butanol
0.61
2.18
2.16
2.72
4.63
4.74
tert-Pentanol
0.62
3.17
2.90
3.78
5.87
5.84
n-Butanol
0.69
2.58
2.68
3.39
5.78
5.74
iso-Pentanol
1.07
4.87
4.75
6.14
10.82
10.76
n-Pentano
1.10
5.63
5.67
7.04
12.88
12.40
Aldehydes
Acetaldehyde
0.24
0.44
0.39
0.49
0.65
0.71
Propionaldehyde
0.35
0.87
0.79
0.97
1.44
1.46
Acrorein
0.35
0.81
0.77
0.91
1.44
1.52
iso-Butylaldehyde
0.46
1.51
1.37
1.67
2.54
2.50
Butylaldehyde
0.54
1.77
1.62
1.96
3.07
3.04
Alkanes
Pentane
0.34
1.24
1.02
1.19
1.39
1.10
Hexane
0.48
2.56
2.03
2.46
3.00
2.20
Heptane
0.73
5.26
4.27
5.03
6.22
4.39
Octane
1.14
10.99
8.54
10.36
13.28
8.94
Aromatics
Benzene
0.87
2.76
2.56
3.00
4.00
3.74
Toluene
1.33
5.72
5.31
6.41
8.54
7.61
Ethyl Benzene
2.09
11.60
1069
12.98
17.58
15.05
o-Xylene
2.52
13.48
12.53
15.32
20.79
18.05
Chloroalkyls
Methylene Chloride
0.41
0.98
0.94
1.09
1.48
1.67
Chloroform
0.59
1.89
1.76
2.15
2.91
3.04
Carbon Tetrachloride
0.75
2.87
2.42
2.98
3.49
3.04
1,2-Dichloroethane
0.78
2.28
2.16
2.56
3.84
4.09
1,2-Dichloropropane
0.98
3.84
3.47
4.23
6.29
6.37
Esters
Methyl formate
0.27
0.51
0.53
0.57
0.91
0.94
Methyl acetate
0.38
1.01
0.97
1.11
1.74
1.75
Ethyl acetate
0.52
1.99
1.83
2.15
3.30
3.16
Methyl propionate
0.57
1.99
1.83
2.15
3.30
3.16
Butyl acetate
1.39
8.78
7.35
9.44
14.60
13.88
Ether
Diethyl ether
0.33
1.41
0.98
1.27
1.45
1.28
Ketone
Acetone
0.33
0.89
0.81
0.96
1.59
1.66
Inorganic
Water*
0.25
0.32
0.41
0.35
0.61
0.83