CAS 1336-21-6 appears in our catalog under these names: Ammonium hydroxide, ACS, 28.0-30.0% NH{3} , Ammonium hydroxide, 50% v/v aq. soln. , Ammonium hydroxide, 10% v/v aq. soln. , Ammonium hydroxide, 0.1N Standardized Solution , Ammonium hydroxide, 5.0N Standardized Solution . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 250g, 1kg, *5x1kg, 500ml, 1L, 4L, 250ml, 1000ml.