What Is Ammonium Bicarbonate?
Ammonium bicarbonate, an ammonium salt of carbonic acid, is represented by NH₄HCO₃ with a molecular weight of 79.06 g/mol. Assigned CAS number 1066-33-7, it is produced through the reaction of aqueous ammonia with carbon dioxide.
At standard conditions, it appears as a colorless or white crystalline powder. Decomposition releases a noticeable ammonia smell. Soluble in water, ammonium bicarbonate forms a slightly alkaline solution, but it does not dissolve in organic solvents like ethanol and acetone.
Uses of Ammonium Bicarbonate
Traditionally used as a baking powder, ammonium bicarbonate imparts a crispy texture to baked goods, making it preferred for commercial confectionery. It also serves as a pH adjuster in hair coloring treatments, enhancing dye absorption by altering hair cuticle dynamics. Beyond these applications, it is utilized in food processing, pharmaceuticals, cough syrups, antacids, and various industrial processes including fertilizer, dye, and plastic production.
Properties of Ammonium Bicarbonate
Heating ammonium bicarbonate leads to the production of ammonia, carbon dioxide, and water. It reacts with strong bases and acids, generating ammonia gas and carbon dioxide gas, respectively. It also interacts with aldehyde-containing substances, potentially causing coloration. Inhalation or contact can irritate, underscoring the need for cautious handling.
Other Information on Ammonium Bicarbonate
1. Regulatory Information on Ammonium Bicarbonate
- It is recognized under various regulatory frameworks, highlighting its environmental impact and safety considerations.
2. Handling and Storage Precautions
- Recommendations for safe storage include using appropriate containers and avoiding exposure to strong acids, moisture, and high temperatures to prevent decomposition and potential fire hazards.