硫酸铵 Traditional form: 硫酸銨 Pinyin (reading): liúsuān'ǎn Definitions: ammonium sulfate Characters: 硫 - sulfur 酸 - tart, sour; spoiled; acid 铵 - ammonium Traditional characters: 硫 - sulfur 酸 - tart, sour; spoiled; acid 銨 - ammonium