METHODS FOR PRODUCING STABLE, ACIDIC UREA SOLUTIONS

摘要

Acidic urea solutions having low equilibrium vapor pressures are produced by stripping an aqueous urea solution having a pH of about 5.5 or less and a total carbonate content which, if present as carbon dioxide, would produce an equilibrium vapor pressure over said solution of more than 0.5 psig. at 20.degree. C., under conditions sufficient to reduce the total carbonate content to a level which, if present as carbon dioxide, would produce an equilibrium vapor pressure over the solution of 0.5 psig. or less at 20.degree. C. Methods for storing such compositions axe also provided. 0187342