A novel salting-out extraction system for determination of ethylene glycol and diethylene glycol in liquid samples followed by GC-FID was written by Wan, Fu;Liu, Shuping;Wang, Li;Si, Shihui. And the article was included in Microchemical Journal in 2022.Recommanded Product: 2,2′-Oxybis(ethan-1-ol) This article mentions the following:
In this work, a new high-efficient salting-out agent, potassium tripolyphosphate, assisted liquid-liquid extraction (SALLE) sample preparation method for the determination of the polar ethylene glycol and diethylene glycol in liquid samples (food stimulants and liquid foods) were developed. To obtain satisfactory extraction efficiencies for the studied analytes, several parameters affecting the SALLE procedure were optimized. The effects of type of salting-out reagent, type of extraction solvent, volumes of ethanol, amount of potassium triphosphate, vortexing and standing times on the extraction efficiency were investigated. Anal. performances of the method were satisfactory, showed good linearity in the selected range (R2>0.9998), limits of detection (LOD) were 0.2 mg·L-1 in all cases. Average recoveries in the ranges of 81.2-109.3% (RSD, 0.03-7.0%) for EG, 88.1 ∼ 109.1% (RSD, 0.1-8.6%) for DEG were obtained. In relation to the green and low solvent consumption, the proposed methodol. could be considered rapid and environment friendly. The developed method can be used not only for the determination of ethylene glycol and diethylene glycol in food simulation solution, but also for liquid foods with obtaining acceptable results. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Recommanded Product: 2,2′-Oxybis(ethan-1-ol)).
2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Recommanded Product: 2,2′-Oxybis(ethan-1-ol)
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts