Solubility and Aqueous sorption test: 10 characterized and ten non characterized samples were placed in a dessicator with silica gel at 37 ± 1 °C. After 24 hours they were withdrawn and weighed in a scale Analytical scale, Model GA 200, Ohaus Corp. Florham Park N.J. This cycle was repeated until a constant weight was obtained weight variation not larger than 0.1 mg in a 24 hour period; this was reported as Mass 1 m1.
Prueba de sorción acuosa y solubilidad: Las muestras, 10 caracterizadas y 10 sin caracterizar, se colocaron en un desecador con silica gel a 37 ± 1 °C. Después de 24 horas, se retiraron y se pesaron en una balanza balanza analítica modelo GA 200. Ohaus Corp. Florham Park, N.J. Se repitió este ciclo hasta que se obtuvo un peso constante variación del peso no mayor a 0.1 mg en un periodo de 24 horas; éste se reportó como Masa 1 m1.