One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 818-61-1, Name is 2-Hydroxyethyl acrylate, formurla is C5H8O3. In a document, author is Li, Chunmei, introducing its new discovery. Application In Synthesis of 2-Hydroxyethyl acrylate.
Dissipation and dietary risk assessment of tristyrylphenol ethoxylate homologues in cucumber after field application
The potential for tristyrylphenol ethoxylates (TSPEOs) residues to contaminate crops or be released into the environment is of increasing concern, as they are toxic to living organisms. This study determined the dissipation of TSPEO homologues in cucumber under field conditions. TSPEOn (n = 6-29) dissipated more rapidly in cucumber than in soil samples, with half-lives of 1.80-4.30 d and 3.73-6.52 d, respectively. Short-chain TSPEOn (n = 6-11) persisted for longer than other oligomers in soil. Concentrations of the final residues (Sigma TSPEOs) in cucumber and soil were 24.3-1349 mu g/kg and 47.3-1337 mu g/kg, respectively. TSP15EO or TSP16EO was the dominant oligomer, with concentrations of 2.30-150 mu g/kg. The risk assessment showed that the acute and chronic dietary exposure risks of Sigma TSPEOs in cucumber were 0.03-0.57% and 0.05-0.39%, respectively, suggesting little or no health risk to Chinese consumers.
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