Lilov M.Kirilov P.2024-07-162024-07-162024-07-162024-07-162019-01-011314-79781314-7471SCOPUS_ID:85071170185https://rlib.uctm.edu/handle/123456789/1254The stability of urea solutions (20 % N) in presence of mineral acids (HNO3, H2SO4, H3PO4) and their ammonium salts (NH4NO3, (NH4)2SO4, NH4H2PO4) is studied in the course of 150 days storage at 298.15 K. The study is carried out by periodical measurement of the electric conductivity and pH values of the solutions.enArticle