He mana keʻokeʻo a ʻono me ka umekaumaha kikoʻī o 7.1 a me ka helu heheʻe 820 ℃ Hiki iā ia ke hoʻoheheʻe i loko o ka waikawa nitric. wela ka sulfuric acid, ammonium acetate a me ka sodium acetate, akā, ʻaʻole i loko o ka wai. Huli ia i ka vellow ke nalowale ka wai aniani ma 135 ℃. He melemele hoʻi ma lalo o ka lā i ka pulu.