Curcuma zedoaria extract as a novel corrosion inhibitor for mild steel in 0.5 M H2SO4 was written by Soltani, Nasrin;Tavakkoli, Nahid;Khayatkashani, Maryam;Eslami, Elham. And the article was included in Iranian Journal of Analytical Chemistry in 2022.Reference of 33171-05-0 The following contents are mentioned in the article:
In this study, curcuma zedoaria extract was investigated as a mild steel (MS) corrosion inhibitor in 0.5 M H2SO4 solution by conventional methods of weight loss (WL), electrochem. impedance spectroscopy (EIS) and polarization at 25°C. The highest percentage of inhibition was obtained for the concentration of 0.5 g/l of curcuma zedoaria extract The results of polarization method showed that curcuma zedoaria extract acts as a mixed inhibitor. Examination of MS immersion time by weight loss method showed that with increasing immersion time, the inhibitory effect decreases in low concentrations of curcuma zedoaria extract but in higher concentrations of curcuma zedoaria extract (concentration 1.0 g/L), the inhibitory effect remains almost constant over time. The effect of temperature on the performance of curcuma zedoaria extract by electrochem. polarization method in the temperature range of 35-65°C shows a decrease in inhibition percentage with increasing temperature Adsorption of curcuma zedoaria extract mols. on the surface of MS at all studied temperatures follows the Langmuir adsorption isotherm. Using the results of kinetic and thermodn. calculations, the adsorption of mols. of curcuma zedoaria extract on the surface of MS phys. adsorption type was observed This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Reference of 33171-05-0).
Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Reference of 33171-05-0
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem