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Naphthenes on Rtx-DHA-100 (ASTM D6729-14)

GC_PC1325
PeakstR (min)Conc.
(wt.%)
1.Cyclopentane26.3699.455
2.Methylcyclopentane39.1975.921
3.Cyclohexane45.9874.773
4.cis-1,3-Dimethylcyclopentane51.7760.300
5.trans-1,3-Dimethylcyclopentane52.3605.799
6.trans-1,2-Dimethylcyclopentane52.9693.653
7.Methylcyclohexane59.8523.677
8.Ethylcyclopentane62.6717.837
9.ctc-1,2,3-Trimethylcyclopentane66.2863.738
10.trans-1,4-Dimethylcyclohexane72.1354.705
11.1-Ethyl-1-methylcyclopentane74.7041.459
12.trans-1,2-Dimethylcyclohexane75.1281.642
13.ccc-1,2,3-Trimethylcyclopentane76.0920.795
PeakstR (min)Conc.
(wt.%)
14.Isopropylcyclopentane77.4971.305
15.cis-1,2-Dimethylcyclohexane80.07010.276
16.1,1,4-Trimethylcyclohexane80.8786.304
17.n-Propylcyclopentane82.0524.373
18.ctt-1,2,4-Trimethylcyclohexane82.0521.839
19.ccc-1,3,5-Trimethylcyclohexane83.8852.343
20.ctc-1,2,3-Trimethylcyclohexane86.9923.676
21.ctc-1,2,4-Trimethylcyclohexane87.2111.062
22.1,1,2-Trimethylcyclohexane87.8351.842
23.Isobutylcyclopentane89.5331.334
24.Isobutylcyclohexane100.3363.666
25.tert-1-Methyl-2-N-propylcyclohexane101.4534.637
26.tert-1-Methyl-2(methylpentyl)cyclopentane114.5433.592
ColumnRtx-DHA-100, 100 m, 0.25 mm ID, 0.50 µm (cat.# 10148)
SampleDHA naphthenes standard (cat.# 30728)
Injection
Inj. Vol.:0.2 µL split (split ratio 200:1)
Liner:Topaz 4.0 mm ID Precision inlet liner w/wool (cat.# 23305)
Inj. Temp.:250 °C
Oven
Oven Temp.:0 °C (hold 15 min) to 50 °C at 1 °C/min to 130 °C at 2 °C/min to 270 °C at 4 °C/min
Carrier GasHe, constant pressure
Linear Velocity:24 cm/sec @ 35 °C
DetectorFID @ 300 °C
Make-up Gas Flow Rate:30 mL/min
Make-up Gas Type:N2
Hydrogen flow:40 mL/min
Air flow:370 mL/min
InstrumentAgilent 7890A GC