... making dry-batteries, ammounium salt and compound fertilizer etc. Ammonium chloride, an inorganic compound with the formula NH4Cl, is a white ... crystalline salt, highly soluble in water. Solutions of ammonium chloride are mildly acidic. Sal ammoniac is a name of the ... natural, mineralogical form of ammonium chloride. The mineral is especially common on burning coal dumps (formed ...