Effect of salts.The CA, produced from either cotton linters or flax fibers, was mixed with solid salt and left for 5 days, with periodic weighing every day, with the objective
of determining its resistance to the action of salts. The salts, which were used, were ferrous sulfate, sodium chloride, tri-sodium orthophosphate and lead acetate. Samples of CA weighing 5 g were used and every day the CA was removed from the salt, thoroughly washed, dried and weighed.