Impurities in α-Methylstyrene on Rtx-1

Injection
Column	Rtx-1, 60 m, 0.32 mm ID, 1.00 µm (cat.# 10157)
Sample	α-Methylstyrene
Inj. Vol.:	1 µL split (split ratio 60:1)
Liner:	Topaz 4.0 mm ID Precision inlet liner w/wool (cat.# 23305)
Inj. Temp.:	250 °C
Oven
Oven Temp.:	85 °C (hold 13 min) to 125 °C at 6 °C/min (hold 2 min) to 250 °C at 30 °C/min (hold 7 min)
Carrier Gas	He, constant flow
Flow Rate:	3 mL/min

Detector	FID @ 300 °C
Instrument	Agilent 7890A GC
Notes	Top chromatogram: commercially available α-methylstyrene Bottom chromatogram: synthetic blend of impurities known to be present in α-methylstyrene at concentrations expected to be found in commercial samples.

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