Isobutyl acetate
Reference standards.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
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The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Acta Petrol Sinica, 2014.04.
Determination of methylal, dimethyl carbonate, secbutyl acetate, isobutyl acetate and n-methyl aniline in gasoline by two-dimensional gas chromatography method.[Reference:
WebLink]
METHODS AND RESULTS:
The separation of the five unconventional components,methylal,dimethyl carbonate,sec-butyl acetate,Isobutyl acetate and N-methyl aniline in motor gasoline,which were hard to be separated from gasoline components only by non-polar capillary column,was carried out by twodimensional gas chromatography.In the two-dimensional gas chromatography the five compounds were cut to the second capillary column to be separated and determined by FID detector and internal standard method.
CONCLUSIONS:
The results showed that the five compounds were well separated from gasoline components with the recovery rate range of 97.9%-102.2%,the relative standard deviation of less than 2.0%and the detection limit of 0.01%(mass fraction),meaning that the quantitative data were accurate and reliable.The repeatability and reproducibility of the method can meet the requirements for routine analysis.
