Study of Kinetic Variables Affecting the Production of Viscose Bleaching Products in Order to Maintain Quality and Increase Product Life

Document Type : Research Article


1 Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. IRAN

2 Department of Chemistry, Farhangian University, Tehran, I.R. IRAN


Sodium lauryl ether is a surfactant that is used as a viscosity agent in bleaching fluid. But in certain chemical environments, the concentration of this surfactant decreases over time. This decrease in concentration changes the chemical and physical properties of the product. In this study, considering the effective parameters on the decomposition rate of sodium lauryl ether sulfate, including temperature, time, sodium lauryl ether sulfate concentration, sodium hydroxide, and sodium hypochlorite concentrations, the decomposition rate of Sodium lauryl ether sulfate was obtained using high-performance liquid chromatography and two-phase titration, and with the aid of kinetic ratios, the constant rate and degradation reaction order were calculated. The obtained results showed that the reaction order of Sodium Lauryl Ether Sulfate surfactant decomposition relative to NaOH concentration is first order. On the other hand, the reaction order of Sodium Lauryl Ether Sulfate relative to its concentration is first order. Then the reaction order of Sodium Lauryl Ether Sulfate surfactant decomposition was obtained at three temperatures of 4, 20, and 47 °C. These results can be used in selecting conditions that lead to increased product shelf life as well as determining the expiration date of the bleach product.


Main Subjects

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