1-Hydroxy-1H-benzotriazole ammonium salt 1-Hydroxy-1H-benzotriazole, ammonium salt 1-Hydroxybenzotriazole, ammonium salt 1H-Benzotriazole, 1-hydroxy-, ammonium salt 2592-95-2 63307-62-0 839725-22-3 EINECS 264-090-5