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

GC_PC1322

	Peaks	t_R (min)	Conc. (wt.%)
1.	Isopentane	14.305	1.599
2.	2,3-Dimethylbutane	27.091	2.352
3.	2-Methylpentane	28.160	6.377
4.	3-Methylpentane	30.764	10.517
5.	2,2-Dimethylpentane	39.279	2.438
6.	2,4-Dimethylpentane	40.792	5.931
7.	2,2,3-Trimethylbutane	41.299	0.660
8.	3,3-Dimethylpentane	45.700	2.305
9.	2-Methylhexane	49.157	4.689
10.	2,3-Dimethylpentane	49.157	4.689
11.	3-Methylhexane	50.963	2.374

	Peaks	t_R (min)	Conc. (wt.%)
12.	3-Ethylpentane	53.135	0.882
13.	2,2-Dimethylhexane	61.266	0.786
14.	2,2,3-Trimethylpentane	63.310	3.673
15.	2,5-Dimethylhexane	63.602	5.854
16.	2,4-Dimethylhexane	63.921	1.454
17.	2-Methylheptane	70.672	4.731
18.	4-Methylheptane	70.917	1.508
19.	3-Methylheptane	72.016	5.909
20.	3-Ethylhexane	72.162	0.307
21.	2,5-Dimethylheptane	82.217	3.860
22.	3,5-Dimethylheptane	82.414	2.344

	Peaks	t_R (min)	Conc. (wt.%)
23.	3,3-Dimethylheptane	82.414	1.765
24.	2,3-Dimethylheptane	85.052	1.160
25.	3,4-Dimethylheptane	85.413	0.839
26.	2-Methyloctane	86.259	1.289
27.	3-Methyloctane	87.147	6.995
28.	3,3-Diethylpentane	87.394	1.914
29.	2,2-Dimethyloctane	92.916	2.098
30.	3,3-Dimethyloctane	94.944	0.804
31.	2-Methylnonane	98.104	1.582
32.	3-Ethyloctane	98.477	1.068
33.	3-Methylnonane	98.823	5.272

Injection
Column	Rtx-DHA-100, 100 m, 0.25 mm ID, 0.50 µm (cat.# 10148)
Standard/Sample	DHA isoparaffins standard (cat.# 30726)
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 Gas	He, constant pressure
Linear Velocity:	24 cm/sec @ 35 °C

Detector	FID @ 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
Instrument	Agilent 7890A GC

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