Ammonium Chloride - NH4Cl

What is Ammonium Chloride?

NH4Cl is an inorganic compound with chemical name Ammonium Chloride. It is also called as sal ammoniac, the salt of ammonia and hydrogen chloride. It is a by-product of sodium carbonate. It has diuretic and expectorant effects.

In its pure form, it is crystalline salt, white in color. This compound is highly water soluble and mildly acidic. It is used in veterinary medicine in the prevention of urinary stones in sheep, goats, and cattle. When ammonium sulfate and NaCl solutions react, NH4Cl is produced. When 5% solution of ammonium chloride by weight is in water it has a pH value between 4.6 – 6.0.

Properties of Ammonium Chloride – NH4Cl


Ammonium Chloride

Molecular Weight/ Molar Mass

53.491 g/mol


1.53 g/cm³

Boiling Point

520 °C

Melting Point

338 °C

Ammonium Chloride Structure – NH4Cl

NH4Cl Uses (Ammonium Chloride)

  • It is used in fertilizers as a nitrogen source

  • It is used in medicine especially in cough medicine as an expectorant

  • It is used in glue which helps to bond plywood

  • It is used in Leclanche cells in aqueous solutions.

  • It is used in food additives – in bread making as yeast nutrient

  • It is used as an acidifier

  • It is used in cooling baths to create low temperatures

  • They are used as buffer solutions along with ammonia

  • It is given to cattle as feed supplements