The molar mass of NH4Cl or ammonium chloride is 53.491 grams per mole. Ammonium chloride is a crystalline salt that dissolves readily in water. It has a melting point of 338 degrees Celsius and a density of 1.53 grams per cubic centimeter.
A solution of ammonium chloride is acidic. It is obtained through the Solvay process, which is used to produce sodium carbonate, and naturally occurs in volcanic regions. Ammonium chloride is used in the treatment of coughs and some urinary tract disorders. In some countries, it is called Sal ammoniac and used as a food additive in some types of liquorice.