Optimization of a new polymeric chromium (III) membrane electrode based on methyl violet by using experimental design was written by Kazemi, Sayed Yahya;Hamidi, Akram sadat;Asanjarani, Neda;Zolgharnein, Javad. And the article was included in Talanta in 2010.Application In Synthesis of Dimethyl decanedioate This article mentions the following:
Placket-Burman and Box-Behnken designs were applied as exptl. design strategies to screen and optimize the influence of membrane ingredients on the electrode performance. A new poly(vinyl chloride) membrane sensor for Cr(III) based on Methyl violet as an ionophore was planned. The major variables to find a model for achieving the best Nernstian slope as response were: PVC, plasticizers, Methyl violet, KpClTPB, pH, conditioning time and internal solution concentration Placket-Burman design was used to screen the main factors and Box-Behnken response surface was led to find a model for optimizing the response. The optimized membrane electrode shows a Nernstian slope for chromium (III) ions over a wide linear range from 1.99 × 10-6 to 3.16 × 10-2 mol L-1 and a slope of 19.5 ± 0.1 mV decade-1 of activity. It would be successfully applied in the pH range from 3.5 to 6.5 with detection limit of 1.77 × 10-6 mol L-1 (0.092 mg L-1). The response time of the sensor is ∼8 s and the membrane can be used for >6 wk without any deviation. The relative standard deviations (relative standard deviation) for six replicate the measurements of 1.0 × 10-4 and 1.0 × 10-3 mol L-1 of Cr(III) were 3.2 and 3%, resp. The electrode revealed comparatively good selectivity with respect to many cations including alkali earth, transition and heavy metal ions. The electrode was successfully used as an indicator in the potentiometric titration of Cr(III) with EDTA and was also applied to the direct determination chromium (III) content of spiked water and soil samples. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6Application In Synthesis of Dimethyl decanedioate).
Dimethyl decanedioate (cas: 106-79-6) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Application In Synthesis of Dimethyl decanedioate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics