High Molecular Weight Impurity in 1,3-Butadiene on Rt-Alumina BOND/MAPD

	Peaks
1.	trans-2-Butene
2.	1-Butene
3.	Isobutene
4.	cis-2-Butene
5.	1,3-Butadiene
6.	4-Vinylcyclohexene

GC_PC1212

Column	Rt-Alumina BOND/MAPD, 50 m, 0.53 mm ID, 10.0 µm (cat.# 19778)
Sample	Refined 1,3-butadiene
Injection
Inj. Vol.:	10 µL split
Liner:	2.0 mm ID straight inlet liner (cat.# 20712)
Inj. Temp.:	200 °C
Split Vent Flow Rate:	100 mL/min
Oven
Oven Temp.:	70 °C (hold 5 min) to 250 °C at 10 °C/min (hold 5 min)
Carrier Gas	He, constant pressure (20 psi, 137.9 kPa)
Detector	FID @ 250 °C
Make-up Gas Flow Rate:	30 mL/min
Make-up Gas Type:	N2
Data Rate:	20 Hz
Instrument	HP5890 GC

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