Pure Chromatography
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www.restek.com

Organic Volatile Impurities on Rtx-5 (Rtx-G27)
Peaks | |
---|---|
1. | Ethylene oxide![]() |
2. | Methanol![]() |
3. | Ethanol![]() |
4. | Diethyl ether![]() |
5. | 1,1-Dichloroethene![]() |
6. | Acetone![]() |
7. | Isopropanol![]() |
8. | Acetonitrile![]() |
9. | Methylene chloride![]() |
10. | n-Hexane![]() |
11. | n-Propanol![]() |
12. | Methyl ethyl ketone![]() |

GC_PH00260
Column | Rtx-5 w/5m Integra-Guard Column (Rtx-G27), 30 m, 0.53 mm ID, 5.00 µm (cat.# 10279-126) |
Sample | Headspace injection of common solvents for pharmaceutical processing. Prepared to equal about 500 ppm in the bulk pharmaceutical. Samples shaken and heated at 90 °C for 15 minutes, 1 mL headspace injection. |
Injection | |
Inj. Vol.: | 1,000 µL headspace-syringe split (split ratio 2:1) |
Inj. Temp.: | 220 °C |
Oven | |
Oven Temp.: | 35 °C (hold 10 min) to 100 °C at 5 °C/min to 240 °C at 25 °C/min (hold 5 min) |
Carrier Gas | He, constant pressure |
Linear Velocity: | 35 cm/sec @ 35 °C |
Detector | FID @ 240 °C |
Notes | FID sensitivity: 1.05 x 10-11 AFS |
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