1: 46 percent / magnesium sulphate / butyl acetate; acetic acid / 20 deg C, 10 min, 110 deg C, 1 h 2: 43 percent / silver nitrate, 33 percent sodium hydroxide / H2O / 0.17 h / 80 °C 3: 12 percent / 0.75 h / 240 - 245 °C View Scheme