A caustic white solid, KOH, used as a bleach and in the manufacture of soaps, dyes, alkaline batteries, and many potassium compounds. Also called caustic potash ,lye ,potash氢氧化钾,苛性钾:苛性的白色固体,KOH,用作漂白剂,并用来制造肥皂、染料、碱性电池以及许多含钾化合物 也作 caustic potash,lye,potash