ResourceSeparations
Acetone as an Alternative to Ethyl Acetate in Flash Chromatography
Acetone as an Alternative to Ethyl Acetate in Flash Chromatography
23 Jul 2015Ethyl acetate is one of the most commonly used solvents in flash chromatography. It is readily available and easy to remove by rotary evaporation. However, ethyl acetate adsorbs in the wavelength range of 200 to 235 nm, a region where many compounds also absorb UV light. In this application note, acetone is presented as an alternative to ethyl acetate for these compounds. Acetone is slightly more polar than ethyl acetate allowing for faster elution of some compounds.
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Flash ChromatographyFlash chromatography is a fast-preparative column chromatography technique used for separation and purification of liquid analytes. Flash chromatography systems use small silica gel particles for separation and a pressurized gas for driving the solvent through the column or pre-packed cartridge. Find the best flash chromatography equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.UHPLC and HPLCHigh performance liquid chromatography (HPLC) and ultra high performance liquid chromatography (UHPLC), also known as UPLC, are analytical techniques used to separate, identify and quantitate components of complex mixtures including biological samples such as proteins and lipids as well as chemical mixtures of pesticides, drugs and oils. Both techniques are liquid chromatographic methods but differ by operating pressures (HPLC < 6000 psi < UHPLC ). Components of HPLC and UHPLC systems include columns, detectors, pumps, autosamplers and column heaters. Explore a range of UHPLC and HPLC columns for your specific sample needs including reverse phase, normal phase, ion exchange, HILIC, ion exclusion and size exclusion columns. For more specialized HPLC, explore FPLC, countercurrent LC and simulated moving bed systems. Find the best UHPLC and HPLC equipment in our peer reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Sample PreparationSample preparation can improve the quality and speed of separation techniques. Products to assist sample preparation include filtration equipment, evaporators, membranes and sieves.HPLC Method DevelopmentIt is important to develop and validate HPLC methods in order to identify, quantify or purify compounds of interest in the most efficient way. Effective method development ensures optimization, quality control and cost effectiveness.Solvent Reduction