Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 2605-67-6, Name is Methyl 2-(triphenylphosphoranylidene)acetate, molecular formula is C21H19O2P, belongs to pyridazines compound, is a common compound. In a patnet, author is Hameed, R. S. Abdel, once mentioned the new application about 2605-67-6, Safety of Methyl 2-(triphenylphosphoranylidene)acetate.
Study of sulfanyl pyridazine derivatives as efficient corrosion inhibitors for carbon steel in 1.0 M HCl using analytical techniques
Five new sulfur containing heterocyclic derivatives of sulfanyl pyridazine type compounds (1-5) were synthesized, characterized by FT-IR and H-1 NMR, and evaluated as corrosion inhibitors for carbon steel in 1.0 M HCl at various concentration and temperatures. Five different analytical techniques were used in this study, namely, gravimetrical, gasometrical, atomic absorption spectroscopy, AAS, thermometric, and acidimetric techniques. The corrosion inhibition efficiency increases with increasing inhibitor concentration but decreases with temperature. The inhibition of corrosion is due to adsorption on the metal surface and formation of a barrier film that separates the metal from the corrosive medium. The inhibition is due to physicochemical adsorption of a heterocyclic compound on steel surface, and the adsorption obeys the Langmuir isotherm. Thermodynamic parameters for both activation and adsorption were computed and discussed. The reduction in reaction number (RR%) and Atm increased with increasing inhibitor concentrations. The pH increased and the hydrogen ion concentration in the medium decreased upon addition of inhibitors as an inhibitor molecule acts as a ligand for protons in acidic media. The ferrous ion Fe+2 concentrations determined by AAS decreased in the solution with increasing inhibitor concentration. The data obtained from different analytical techniques are in good agreement within (+/- 2%).
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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem