Detailed Hydrocarbon Analysis (DHA) on Rtx-DHA-100

	Peaks
1.	Ethanol
2.	C5 (n-pentane)
3.	tert-Butanol
4.	2-Methylbutene-2
5.	2,3-Dimethylbutane
6.	Methyl tert-butyl ether (MTBE)
7.	C6 (n-hexane)
8.	1-Methylcyclopentene
9.	Benzene
10.	Cyclohexane
11.	3-Ethylpentane
12.	trans-1,2-Dimethylcyclopentane
13.	C7 (n-heptane)
14.	2,3,3-Trimethylpentane

Injection
Column	Rtx-DHA-100, 100 m, 0.25 mm ID, 0.50 µm (cat.# 10148)
	using Rtx-5 DHA tuning column 2-5 m, 0.25 mm ID (cat.# 10165)
	with universal Press-Tight connectors (cat.# 20429)
Sample	Oxy setup blend (cat.# 33034)
Inj. Vol.:	0.1 µL split (split ratio 150:1)
Liner:	Premium 4 mm Precision liner w/wool (cat.# 23305.1)
Inj. Temp.:	250 °C
Oven
Oven Temp.:	5 °C (hold 10 min) to 49 °C at 5 °C/min (hold 50 min) to 200 °C at 1.5 °C/min (hold 10 min)
Carrier Gas	He, constant flow
Flow Rate:	2.2 mL/min

Detector	FID @ 275 °C
Make-up Gas Flow Rate:	30 mL/min
Make-up Gas Type:	N₂
Hydrogen flow:	40 mL/min
Air flow:	368 mL/min
Instrument	Agilent 7890B GC
Notes	Restek's Rtx-DHA-100 column has the required selectivity to deliver adequate resolution between the critical pairs in ASTM Method D6730. Excellent column inertness provides peak shapes for oxygenated compounds that meet or exceed ASTM method criteria. Chromatogram was obtained using 2.5 m of Rtx-5 DHA tuning column.

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