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Organic Volatile Impurities: Retention Time Index

Conditions used to determine retention time data are listed below.

Retention Time
Compound
ICH
Class
G16
Stabil-
wax
G16
Rtx-WAX
G43
Rtx-1301
G27
Rxi-5ms
G1
Rtx-1
NA
Rtx-200
1,1,1-trichloroethane
1
  3.96
  3.49
  5.43
  5.40
10.82
  8.35
1,1,2-trichloroethane
2
15.72
14.28
10.99
  9.77
16.75
14.94
1,1-dichloro- ethene
1
  2.23
  2.04
  2.79
  4.41
  5.73
  4.16
1,2-dichloro- ethane
1
  8.80
  7.68
  6.15
  5.46
10.38
  9.74
cis-1,2-dichloro- ethene
2
  6.50
  5.65
  4.79
  2.88
  8.71
  7.11
trans-1,2-dichloro- ethene
2
  3.63
  3.20
  3.55
  3.54
  7.17
  5.16
1,2-dimethoxyethane
2
  4.80
  4.18
  6.03
  5.54
10.98
10.63
1,4-dioxane
2
  8.55
  7.49
  7.86
  7.26
13.54
14.34
1-butanol
3
11.13
10.08
  7.18
  5.76
11.49
10.13
1-pentanol
3
14.95
13.75
11.19
  9.44
16.99
14.95
1-propanol
3
  7.69
  6.80
  4.20
  3.37
  6.81
  6.13
2-butanol
3
  7.25
  6.44
  5.08
  4.16
  8.51
  7.69
2-ethoxyethanol
2
13.99
12.70
  8.69
  7.36
13.91
13.99
2-methoxyethanol
2
12.42
11.11
  6.02
  5.14
  9.83
10.74
2-methyl-1-propanol
3
  9.32
  8.40
  6.00
  4.79
*
*
2-propanol
3
  4.81
  4.25
  3.00
  2.55
  4.91
  4.69
3-methyl-1-butanol
3
13.42
12.25
  9.86
  8.26
15.28
13.55
acetic acid
3
22.47
20.34
  6.52
  4.61
  8.84
  8.96
acetone
3
  3.02
  2.64
  2.89
  2.50
  4.64
  7.68
acetonitrile
2
  6.91
  5.83
  3.28
  2.47
  4.32
  8.89
anisole
3
18.65
17.09
17.12
16.28
25.00
22.84
benzene
1
  5.23
  4.54
  5.98
  3.83
11.63
  9.17
butyl acetate
3
  8.86
  7.88
12.12
11.38
19.43
19.63
carbon tetrachloride
1
  3.96
  3.49
  5.61
  5.90
  11.89
  7.42
chlorobenzene
2
13.91
12.54
13.55
13.14
21.56
18.48
chloroform
2
  7.31
  6.41
  5.23
  4.64
  9.18
  6.66
cumene
3
12.36
11.17
16.66
16.69
25.88
20.90
cyclohexane
2
  2.16
  2.01
  5.37
  5.89
*
*
dichloromethane
2
  5.01
  4.33
  3.31
  3.06
  5.87
  4.88
dimethylsulfoxide
3
26.47
24.43
16.62
13.01
18.81
30.95
ethanol
3
  4.98
  4.37
  2.52
  2.19
  4.03
  3.80
ethyl acetate
3
  4.08
  3.56
  4.87
  4.44
  9.04
10.35
ethyl benzene
2
10.72
  9.58
13.86
13.81
22.54
18.18
ethyl ether
3
  1.72
  1.63
  2.58
  2.67
  5.34
  3.87
ethyl formate
3
  3.16
  2.78
  3.00
  2.78
  5.46
  6.48
ethylene glycol
2
28.06
26.23
10.77
  6.63
12.59
13.86
formamide
2
32.99
30.93
11.85
  7.30
12.72
19.93
formic acid
3
24.64
22.09
  5.19
  2.60
  5.59
  5.06
heptane
3
  1.98
  1.86
  6.34
  6.98
14.18
  7.84
hexane
2
  1.65
  1.58
  3.77
  4.11
  9.06
  4.86
isobutyl acetate
3
  6.99
  6.18
10.39
  9.69
17.35
18.02
isopropyl acetate
3
  4.26
  3.74
  6.19
  5.71
11.47
12.38
methanol
2
  4.23
  3.64
  1.96
  1.80
  3.14
  2.93
methyl acetate
3
  3.19
  2.80
  3.17
  2.93
  5.80
  7.10
methylbutyl ketone
2
  9.10
  8.05
11.81
10.50
17.94
20.81
methylcyclohexane
2
  2.50
  2.30
  7.31
  7.95
15.49
  9.21
methylethyl ketone
3
  4.33
  3.76
  4.90
  4.09
  7.99
11.55
methylisobutyl
ketone
3
  6.84
  5.97
  9.64
  8.49
15.35
18.41
m-xylene
2
11.21
10.04
14.29
14.17
23.01
18.78
N,N-dimethyl- acetamide
2
20.75
19.01
12.95
13.96
21.42
30.00
N,N-dimethyl- formamide
2
18.04
16.26
13.09
10.23
16.52
26.19
nitromethane
2
11.82
10.31
  4.84
  3.53
  6.30
12.01
N-methylpyrrolidone
2
29.84
27.86
25.09
21.85
29.99
38.08
o-xylene
2
12.79
11.51
15.46
15.26
24.23
20.33
pentane
3
  1.49
  1.45
  2.39
  2.62
  5.36
  3.29
propyl acetate
3
  5.98
  5.29
  8.03
  7.44
*
*
p-xylene
2
10.98
  9.82
14.29
14.17
22.99
18.69
pyridine
2
12.64
11.24
  9.60
  8.57
15.40
16.45
sulfolane
2
47.62
43.31
34.02
28.90
36.76
48.67
tert-butylmethyl ether
3
  1.94
  1.82
  3.50
  3.59
  7.52
  5.73
tetrahydrofuran
3
  3.63
  3.19
  5.12
  4.90
  9.81
  9.48
tetralin
2
25.12
23.48
27.49
27.44
37.27
31.72
toluene
2
  7.86
  6.91
  9.80
  9.66
17.36
14.00
1,1-diethoxypropane
  5.42
  4.84
11.39
11.38
19.82
15.08
2,2-dimethoxypropane
  3.11
  2.79
  5.48
  5.55
11.37
  8.67
2-chloropropane
  1.96
  1.82
  2.67
  2.66
  5.20
  4.61
2-methylpentane
  1.58
  1.52
  3.22
  3.56
  7.72
  4.32
acetaldehyde
  2.05
  1.85
  1.86
  1.84
  3.14
  3.90
chloroethane
  1.83
  1.71
  2.14
  2.10
  3.97
  3.55
chloromethane
  1.63
  1.55
  1.70
  1.70
  3.01
  2.73
ethylene oxide
  2.05
  1.86
  1.89
  2.02
  3.59
  3.92
formaldehyde
  2.25
  1.57
  1.68
  1.58
  2.66
  2.59
isoamyl acetate
10.51
  9.43
14.84
14.18
22.80
22.62
isooctane
  1.85
  1.75
  5.84
  6.59
13.66
  8.07
isopropyl ether
  1.86
  1.76
  4.03
  4.23
  9.03
  5.83
methyl cyclopentane
  1.91
  1.79
  4.50
  4.93
10.41
  5.81
methyl isopropyl ketone
  4.93
  4.29
  6.58
  5.69
11.04
14.47
methylal
  2.26
  2.06
  2.84
  2.82
  5.65
  5.09
trichloroethene
  6.50
  5.70
  7.07
  7.05
13.58
  9.75
water
  8.24
  7.18
  1.74
  1.68
  2.75
  2.57
*not determined


Retention time data collected using the following conditions:

Stabilwax (G16)

 

Column dimensions:

30m x 0.25mm x 0.5µm df

Phase ratio:

125

Oven program:

40°C, hold 1 min., to 190°C @ 4°C/min., hold 15 min.

Carrier gas:

helium

Carrier flow (mL/min.):

1.2

Dead time (min.):

1.38 @ 45°C

  

Rtx-WAX (G16)

Column dimensions:

30m x 0.25mm x 0.5µm df

Phase ratio:

125

Oven program:

40°C, hold 1 min., to 190°C @ 4°C/min., hold 15 min.

Carrier gas:

helium

Carrier flow (mL/min.):

1.2

Dead time (min.):

1.40 @ 45°C

  

Rtx-1301 (G43)

Column dimensions:

30m x 0.25mm x 1.0µm df

Phase ratio:

63

Oven program:

40°C, hold 1 min., to 190°C @ 4°C/min., hold 15 min.

Carrier gas:

helium

Carrier flow (mL/min.):

1.2

Dead time (min.):

1.40 @ 45°C

  

Rxi-5ms (G27)

Column dimensions:

30m x 0.25mm x 1.0µm df

Phase ratio:

63

Oven program:

40°C, hold 1 min., to 190°C @ 4°C/min., hold 15 min.

Carrier gas:

helium

Carrier flow (mL/min.):

1.1

Dead time (min.):

1.49 @ 45°C

  

Rtx-1 (G1)

Column dimensions:

60m x 0.53mm x 3.00µm df

Phase ratio:

43

Oven program:

30°C, hold 4 min., to 220°C @ 4°C/min.

Carrier gas:

helium

Carrier flow (mL/min.):

6.3

Dead time (min.):

2.54 @ 35°C

  

Rtx-200

Column dimensions:

60m x 0.53mm x 3.00µm df

Phase ratio:

43

Oven program:

30°C, hold 4 min., to 220°C @ 4°C/min.

Carrier gas:

helium

Carrier flow (mL/min.):

7.8

Dead time (min.):

2.22 @ 35°C

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