![]() Heptane is a less toxic alternative for hexane. Usually uses commercially purchased NH3 in MeOH (ex. Three solvent system.Ĥ% (7N NH3 in MeOH)/( DCM) Diethyl ether presents flammability concerns. However, a low boiling point (high vapor pressure) increases flammability concerns.Ĭonsidered a 'greener alternative' to MeOH/ DCM since it replaces DCM with EtOAc. Pentane (similar to heptane) is a less toxic alternative for hexane. PE/ EtOAc).Īn option for compounds that have good solubility in DCM, but don't move much on silica at 100% DCM.ģ0-50% EtOAc/ cyclohexane Ġ-100% EtOAc/ cyclohexane Ĭyclohexane (similar to heptane) is a less toxic alternative for hexane. It is one of the only solvent systems where the less polar solvent is typically written first (i.e. The low boiling point (high vapor pressure) of PE increases flammability concerns. Heptane is generally recommended as a replacement for hexane because of its lower toxicity. ![]() It still may be useful for easy separations. All rights reserved.Solvent Systems for Silica Gel Column ChromatographyĪs a one component solvent system there is no ability to create a gradient. On behalf of the United States of America. Shall not be liable for any damage that may result fromįor NIST Standard Reference Data products. However, NIST makes no warranties to that effect, and NIST Uses its best efforts to deliver a high quality copy of theĭatabase and to verify that the data contained therein haveīeen selected on the basis of sound scientific judgment. The National Institute of Standards and Technology (NIST) Data from NIST Standard Reference Database 69:.Go To: Top, Normal alkane RI, polar column, isothermal, References Study of the dependence of the retention behavior of polyoxyethylene glycol columns on the nature of the support and phase loading, Gas-liquid chromatography in qualitative analysis. Prediction of gas chromatographic retention indices of alkylbenzenes,Īnal. Khimia i khimicheskaia tekhnologia (Chemistry and chemical technology), 2000, 43, 4, 39-45. Enthalpies of evaporation and thermodynamics chracteristics of sorption by stationary phases OV-101 and PEG-40M, Thermodynamics of alkylbenzene sorption and evaporation. Gas chromatography analysis of organic solvents using capillary columns (No. Retention in gas-liquid chromatography with a polyethylene oxide stationary phase: molecular simulation and experiment, Go To: Top, Normal alkane RI, polar column, isothermal, Notes Secretary of Commerce on behalf of the U.S.A.ĭata compiled by: NIST Mass Spectrometry Data Center, William E. Normal alkane RI, polar column, isothermalīy the U.S. Your institution may already be a subscriber.įollow the links above to find out more about the data With the development of data collections included in The purpose of the fee is to recover costs associated NIST subscription sites provide data under theĭata Program, but require an annual fee to access. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data).NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data).NIST Polycyclic Aromatic Hydrocarbon Structure Index.X-ray Photoelectron Spectroscopy Database, version 4.1.Computational Chemistry Comparison and Benchmark Database.Microwave spectra (on physics lab web site).Normal alkane RI, polar column, isothermal.Use this link for bookmarking this species This structure is also available as a 2d Mol file IUPAC Standard InChIKey: YXFVVABEGXRONW-UHFFFAOYSA-N Copy.
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