A study was made of the protective effect that various sulphurated synthetic anti-oxidants produce with different concentrations in a watery solution of ascorbic acid. The oxidation process was accelerated by using temperatures of 40, 50 and 60°C and the corresponding parameters were calculated in agreement with a diminishing kinetics to the order of one.Se estudia el efecto protector que varios antioxidantes sintéticos sulfurados, ejercen a distintas concentraciones, sobre una solución acuosa de ácido ascórbico. Se acelera el proceso de oxidación, utilizando temperaturas de 40, 50 Y 60°C y se calculan los parámetros correspondientes de acuerdo con una cinética de degradación de orden uno