Welcome to the New Restek.com! Take a tour of the new site and feel free to send us your feedback.

Your web browser will no longer be supported by Restek.com as of 30 June 2021.
To avoid any interruption in access or functionality, install a current-generation web browser now. Learn more.

Impurities in Methyl-t-Butyl Ether (MTBE) on Rtx-DHA-100 (ASTM D5441)

ColumnRtx-DHA-100, 100 m, 0.25 mm ID, 0.50 µm (cat.# 10148)
SampleASTM D5441 MTBE contaminants mix
Conc.:1 % (w/w) each component in MTBE
Inj. Vol.:0.2 µL split (split ratio 200:1)
Liner:Cup splitter (cat.# 20710)
Inj. Temp.:200 °C
Oven Temp.:50 °C (hold 13 min) to 180 °C at 10 °C/min (hold 7 min)
Carrier GasHe, constant pressure (39.3 psi, 271.0 kPa)
Linear Velocity:23 cm/sec @ 50 °C
DetectorFID @ 250 °C
Make-up Gas Flow Rate:24 mL/min
Make-up Gas Type:N2
Hydrogen flow:30 mL/min
Air flow:358 mL/min
InstrumentAgilent 7890A GC
NotesResolution between trans-2-pentene/tert-butanol and tert-butanol/cis-2-pentene exceeds the ASTM Method D5441 requirement of R ≥ 1.3.